HI! Newbie with 94 G30 Van

Well I just saw this introduction thing after I already made a post, but here is my introduction.

I've been turning wrenches for a long time but it's not what I do full time.

I've never messed with tuning a computer before. It was very mystical and intimidating before. But now that I've figure out what a bin, xdf and adx file are, successfully read, saved and shared a bin, burned and installed a chip and it runs (!), I feel pretty good about it, but I still have a lot

I've got a 94 G30 van with 5.7 TBI. I just put Vortec heads on it, the intake from Summit that uses TBI on Vortec heads, knock-off Doug Thorley headers, dual exhaust with flowmaster 50 series mufflers. EGR is connected. Scorpion 1.6 ratio full roller rockers. Stock cam, since I'm going for torque and mileage. I hope I'm on the write track.

Next I'll be looking for a good starter bin file for my combination. I hope I don't break anything!