I plan on running the following setup:

98 LS w/60k miles

Used Garrett T3 turbo/intercooled/Tial WG
Walbro 255lph intank pump
440cc Injectors
AFC Hack
B&M commandflo fuel pressure modifier w/gauge
(Wideband o2 for tuning)

I've read that base stock fuel pressure is 44-55psi and that 70psi is the limit. Also for every 1 psi of boost, 1 psi of fuel pressure is added to the rail. I plan on running up to 12psi on the motor. I will be buying a Tech Edge Wideband o2 to do road tuning. With the above setup, what should I set my idle/base fuel pressure to? Thanks in advance for your help.