[K22]

I going to rebarrel a Kimber Montana 223 and can't make up my mind if I should go with a 204 or a 17-204. Obviously this will be a lightweight Predator rifle, but one I want to play around with using different loads and bullet weights. Plus, I have a Grandson who has become a hunting partner. Shooting my 17 Rem is something he loves doing.
I have a Kimber Montana I rebarreled to a 17 Rem. and an original Kimber Montana in 204. Oh, and I have 223's.

Any idea's or opinions?