I am getting ready to start gathering parts for a 22 ARC build. Right now the only parts I have on hand are a Magpul stock and Geissele Mark 18 handguard. I was looking at the Faxon barrels but not sure if there is a better option. I am thinking about an 18" or 20" stainless barrel. Do I need to go rifle length +1 with the 20" barrel? The main use for the rifle will be coyote, fox, and groundhogs but I am thinking about trying it out on pigs in Florida next year. It will probably put my last Bushnell LRHSi scope with a Seekins cantilever mount on it. It's been awhile since I built an AR so I am looking for suggestions for the upper and lower as well as the lpk. One of my hunting buddies is suggesting a Gibbz side charging upper but I have no experience with them. I don't mind sp3dding a little more to get better quality but would like to keep the build around $1,000 or so.