Honestly, I think you should stick with what you have and just keep building on that. Higher comp (welded chamber possibly to save $ - although I am not sure how it would work out on the 92mm bore), new header, new IM w/
BIG TB, custom cams etc. It would be a shame to boost this thing now and like you say nawz might be risky. I see no reason you cant reach 300 whp with all parts being tuned together. The CT guys are making everyone a believer, again!
OR
You could slap an SR16 crank in there, dry sump the oil system, modify the valvetrain and with some custom cams...rev that bish to 14,000 rpm!
....or not.