Stock pistons are good for 300bhp and the rods around 240/250bhp if you keep the limiter as stock and don't spend your time bouncing off it.
If not then PEC and Wossner are the best value for money IMO, I ran circa 280bhp @ 32psi.
But do not go low comp!! It's a waste of time unless you want over 300bhp and will just cost you response!

The rest of your spec is spot on for 250bhp+ with good mapping.