I would recommend you either save your money or spend it on something else.
I don't know how interested you are in being really proficient with handguns, so bear with me here if this is of no interest to you now. Maybe what I say will change your mind on two handgun topics: competition and reflex sights.
TLDR: Start competing in USPSA pistol matches and put red dots on your pistols.
My primary reason for having handguns is for self defense, particularly when away from home. The reasons handguns are superior to rifles as an every day defensive weapon are obvious and numerous and I won't rehash that here.
Unfortunately handguns are the most difficult type of firearm to become proficient and, more importantly, remain proficient with. That means that handguns demand the most of your time, attention, and skill to be good with. And if I am going to depend on one to defend myself or my loved ones with, while causing no unintended harm to innocents who may be around, I have a responsibility to be as proficient as I can possibly be with a handgun in my hands. There are other tactical and technical aspects of self defense that don't involve any weapons and we should also be proficient in them but that's not the subject now so I'll ignore them.
The way that many people gain skill with a handgun is flawed in my opinion. They may or may not attend some training class. Some are training whores and will spend thousands and thousands chasing the celebrity trainers du jour around. Then what do they do after training? Most people either do nothing, or they limit themselves to mostly static drills in either indoor ranges where drawing from a holster is prohibited and movement is impossible or if they have access to an outdoor range where movement and draws (dynamic shooting, I'll call it) are allowed, they probably repeat the same set of drills over and over and over. Most people don't hold themselves accountable using a shot timer, either. It takes a ton of self discipline to practice on your own the way one should and IME it gets boring quick.
Formal practical pistol competition (IDPA and USPSA) are not training. Nor are they practice for skills like clearing houses, de-escalating conflicts, etc etc etc. What they are (USPSA in particular) is intense tests of your practical marksmanship skills under severe time and mental pressure. USPSA practical shooting, due to its freestyle philosophy, does not dictate in general how you are to solve a particular shooting problem. You are free to add tactical movement any way you see fit, or not. Not only are they that, but they have match results and standard exercises (classifiers) that you can easily use to measure your skill. You also get to meet a lot of like minded people very quickly, which can lead to practice/training partners and other social benefits.
The people who stupidly say that "competition will get you killed in the streets because bad habits" seem to ignore that the Army Marksmanship Unit maintains an action pistol team for a reason beyond competition, and that several high level competitors came to USPSA while they were on active duty in some of the most elite military units we have (Ernest Landgon and Frank Proctor are two who come to mind).
Now let me tackle the self-defeating "I'm not good enough" thought/attitude. What IS being good enough to go compete? Since I am a competitor, I think I know. You just need to be a safe gun handler. THAT IS IT. Moving your finger completely out of the trigger guard when your pistol is not being actively aimed and fired needs to be instinctual. You need to be able to manipulate your handgun (draw, load, unload, reload, and fix basic malfunctions) competently and while maintaining control of your muzzle's direction. Competently doesn't mean rapidly. It means that you know how to do those actions purposefully, effectively, and safely. And you need to follow some really basic directions from the Range Officer who will follow you as you shoot a stage. That's it. All of those basics will be covered during the new shooter briefing that happens at every match. Additionally, when the match starts you should tell the Range Officer responsible for your squad that you're a new shooter and you will be helped to remain safe and have a good time. We do this for fun too, since none of us gets paid to shoot.
As far as gear, here is what you need to get started.
- A 9 mm, 40 S&W, or 45 ACP handgun, preferably something with 15 rounds or more of magazine capacity
- A holster that is designed to fit the handgun. OWB, IWB, AIWB are all OK in USPSA
- A belt meant for carrying a pistol. Your everyday carry belt will do just fine.
- A minimum of two magazine carriers
- A minimum of three magazines
- Eye and hearing protection
I bet you have all of that right now.
I've gone on long enough so this is all I will say about pistol-mounted reflex sights: they are game changers and force multipliers. The higher your stress level when you have to shoot a pistol, the more the red dot sight helps you. The farther the shot, the more the red dot sight helps you. Red dot sights on pistols make target transitions, either laterally or distance wise, much easier and faster. Red dot sights make shooting on the move easier. And once you're past the short learning curve of using one, even close shots can be take much faster than you can with irons. All of those benefits/improvements are magnified once you reach middle age and presbyopia (the hardening of the optical lens in your eyes) begins to happen and you begin to lose your ability to focus on near objects like the front sight of your pistol. And make no mistake, presbyopia happens to everyone. It may start at different ages, and it may progress at a different rate, but it's just another inevitable part of aging and it's independent of your visual acuity.
With a reflex sight, all your eyes need to do is look at the target. You absolutely never, ever, try to focus on the dot. You can get away with focusing on the dot with a rifle, even though you would be much faster and equally accurate if you focused on the target, but focusing on the dot on a handgun will make you extremely slow and that's the mistake most people have made when they claim "I'm faster with iron sights".
Anyway, sorry for the book. Hope you find some of it useful.