boost controller quest.

Well, I've started the long journey of saving up for turbo...and I've been trying to figure out the costs. $3000 for the drag t3/t04 hybrid kit w/all the goodies included. Now I figure spark plugs/gauges/labor/etc for installation...will put me up around $3800-$4000....now I'm concerned about the boost controller. Basically when I first get the turbo I don't want to run high boost, I'd like to keep it low. Can I go without a boost controller for a while, maybe like half a year??? And how much boost will the Drag turbo kit come with?? I can't find how much boost it runs w/o a controller. If possible I'd like to get up and running with the whole kit and labor being around or under $4000, and I know a controller will put me way over that mark. I want to be safe about it, but if possible I'd like to not have to buy a controller at first. I'm perfectly fine with only running on 5 or 6 psi or whatever it comes at....any ideas?