I have that same scope (Viper PST 5-25x50). I also have two Razors (Gen-1 5-20x50, Gen-2 4.5-27). I agree with Longshot's assessment.
High magnification at longer range is fine if you have all day to find your target and are set in concrete to hold steady on that target. That doesn't happen in hunting, - or competition. You'll seldom run over 12-15x because your field of view is so narrow at higher magnification that locating any target, let alone the right target in a narrow field, takes forever. You don't have forever. Ask me how I know. That was the biggest lesson of my first match.
You don't say if your current Viper is first or second focal plane. If it's FFP, I'd say stay with it for that rifle for awhile. If it's SFP, it will be very difficult to use the stadia marks on your reticle for "hold over" targeting. Whatever you upgrade path becomes, FFP is the way to go.
Regarding competition "if you get good enough" - "good" is relative. When I started clay target competition decades ago, I already had years of experience and a bad round was less than 95 targets out of 100. Most casual skeet shooters would dance for joy with a 95 - but a 95 was, and remains, a disaster for top-rated shooters. Everything changes when there's a ref with a score sheet in one hand and the pull cord in the other hand, looking at you, waiting for your call. The earlier you get used to it, the better.
I've only been doing competitive rifle 18 months, and the principles are the same. If you enjoy the sport, get a good footing in the fundamentals and attend a match. Enjoy and learn. It's fine to ask questions. Everything changes when the clock is running and hits are counting. Get used to it early, and you'll progress all the faster.