N2O help please

Hello guy I am kind of new to the N2O board :D but I think Im going to which from a SuperCharger to N2O on my new motor which is a LT1 4 bolt main 383 with Forged bottom end and stage 2 heads And Im wantting to know is What all do I have to do inorder to spray about a 250 shot ?? I have a 255lph pump and 24# SVO Injecters. Remember Im new to N2O:D Also What brand is good ??

Thanks you can Email me @ AirRide97Expo@aol.com