I have a similar setup. It's being built currently, but I'm hoping to hit the 400rwhp mark. I'll list the mods:
-440cc injectors
-Walbro 255lph
-stock fuel pump regulator
-BC 264 cams with BC spring and retainers
-SAFC II (may switch to e-manage ultimate if it will make a big difference, I also want to heighten my rev limiter to 8000)
-Blitz Access ECU (tuned for 370cc injectors, no speed cut, no fuel cut, still has the crappy 7200rpm limiter)
-Turbosmart manual boost controller
-Drifmotion 60-1 single turbo kit, .70AR
-Driftmotion hardpipe kit and "1JZ intercooler" kit. HKS SSQV III BOV
-Full 3" exhaust
Opinions about my setup and my goals would be cool. Also, what PSI would be the maximum to run safely on 440cc injectors? Just so I don't have anymore mishaps...