More nitrous newb questions

[bustedassz28]

Hey guys, been reading up alot ( posts from zooguy, chopstix, dawdaw, etc) and im still nervous about spraying, that said i still have some questions, just wanna clarify some stuff for my individual setup. I have a compucar wet system with a nozzle set up for 125 hp. Which plugs at what gap? Will 4 deg retard be enuff or should i start with more? And currently im running the stock fuel pump, should i spray with this one or should i wait til i get a walbro / racetronix? Lastly, concerning the fuel pump, i think 255 lph is enough, or should i go to a 340 lph? Mods are below, if you need more info just ask. I'm really nervous about using n2o but at the same time i've been itching to spray real bad! Thx guys as always i appreciate the help