I've made 210hp/210tq to the wheels out of an EJ205 with a TD04 turbo; My clutch setup is a stage two HD clutch, and streetlight flywheel, mated with an 01' RS 5 spd. box. My clutch setup may be overkill, but I didn't intend to blow up my trans either. I have had ZERO problems with the trans, probably because I always ride the clutch, and never launch the car. The only problems I've had with my clutch setup is the throwout bearing making noise, and the unit heating up from riding the clutch too much. The sort of power numbers you're aiming at are certainly high for someone who needs a recommendation on which clutch to get.
I suggest that you go here:
www.rs25.com/forums
I also suggest that you read that site front to back, like it were Catcher In The Rye in high school and your senior privileges depended on it.