What fuel pressure should i be running ? (see sig)

What timing do you think i should be running with this modified motor ?

Im having a real tough time with my lower end response, it kinda boggs a little, i had to adjust my idle speed a bit, it wanted to die in drive, what are you guys running your idle speed at in drive on a modified motor ?

(i do have some computer work done, i didnt do it though, somone who had more knowledge did, it's supposedly tuned for my mods)

Thanks