Bad240

Ok, for starters i have a 95 240 with a S13 Redtop swap. All i have at the moment is a downpipe, and exaust. I just bought a Greddy PRofec B Spec II and this thing is confusing as hell. I would like to have my low boost setting to be at 10 psi, and my high boost to be at 12psi. There are many setting that need to be adjusted for this to happen, but i dont know what they hell i'm doing with the settings to be honest. I have the stock wastegate, and i have been getting boost spikes, boost fall offs, it doesnt feel like the peek 11.6 psi that it reads. Also, the spool up is REALLY SLOW. PLEASE HELP ME!!!!!