Then I'd go custom and save a lot of grief and money
You don't have to shoot competition, heck I shoot by myself all the time. If ANYONE thinks that just because you own a "custom", that you can always shoot tiny little groups, they couldn't be more wrong. It takes a lot of practice to shoot those tiny groups at 400 and 500yds.
Trust me, its much harder shooting at a spot the size of a dime at 500yds than it is shooting at an 8" gong. Not saying hitting steel isn't or can't be fun, but that's a large target compared to something the size of a dime.