Turbo H22a1 del sol help

hey guys, just about finished with the whole project, im just unsure of a few things. first, how much boost is safe to run every day? Do i need a btm?, if so how many degrees retard should i go? i am running a vortech 12\1 fmu with a 255lph fuel pump and stock injectors, i was going to get injectors, but i saw what came with a drag stage 2 kit and they dont include injectors so i think these will do. please any other helpful information you may have will be appreciated... thaks!!