I shot some IPSC back in the 90s. I can shoot accurately. Fast and accurate, not so much. NRA Highpower (rifle) was my forte. I enjoyed beating up on the guys with the expensive M1As and 308s with my REM 700 VS in 223 with a heavy Kreiger barrel. An 80g Sierra with 25.3g Varget did the business.
I haven't kept up with CAS...What do you need? A 97 Winchester scatter gun, a 92 levergun if some sort, and a couple of Colt replicas? Then you need the clothing, maybe a knife.
Have you picked out name for yourself? Do they still do that?
What caliber? I'm partial to the 44 Special.