hi or low compression for bigger N2O shot

I want to run a 100-125 shot of N20. I know i need rods and pistons, but should i have low or high compression, also, would the stock sleeves and crankshaft hold up to 300hp (92 prelude SI closed deck H23) or should i get it resleeved (and i dont know where to get a crankshaft if i have to) obvioulsy it will be a wet kit. I more or less just want to know what it will take to make my engine strong enough i wont have to worry about damaging anything with a 125shot... thanx for any help