Civic with vafc fuel setup

Hi Im runing a d16z6 with a greddy turbo w/ ported head etc.
Im currently runing my setup with the blue box and am ready to ditch it for higher boost and more fuel w/ stock bottom!
I ordererd my vafc , walbro intank 255 pump, and 440 rc injectors, im boostin 7 now and will be boostin 9.
My question is I no im can run the stock fuel regulator, but i already have a weopon r adjustable fuel regulator, can I use the weopon r to regulate the pressure, is it not the same thing as the stock?>?
Currently making 157.8 hp with 154.6 torque, which is really low for my setup so ill turn it up and let u all no the outccome!!]


P.S
The Blue Box sux ass and will only hold u back
Id have ditched it from the begginin had i realized