Nitrous fuel pressue info needed

I have seperate regulaters and gauges going from y to the carb,and going to solinoid.Evering thing is new.Nitrous express system.Got three 10 lb bottles just hydro tested and re stamped to bee up to specs.All new valves and gauges on bottles.I dont hack stuff together,I try to do it correct the first time.thats why I read, and ask alot of questions.And do alot of reserch,I then gather all the info I get,and do what I think is best.If 10 people tell me to retard it 2 degrees,and 10 other people tell me no retard needed at this level.I will retard it 1 degree.I dont take any 1 persons word on anything I do,but I want ALL Ideas and opinions so I have a chance at doing this right.THANK YOU for your guiedness so far.PLEASE keep it comming.Mark