hey guy's, I was initially going to hold off on my next turbo upgrade till next year but the temptation wont let me

My goals are between 350-400whp, I've done a little research on products and read some other members ups and downs during and after their build up. So I hope I'm choosing reliable parts that will perform. Car will be mostly street with some track days.
pauter rods w/MAHLE forged pistons
exhaust mani- T3 w/ external gate, 3" DP and exhaust (still sourcing make)
upgrade the front mount to something like 24"X8"X3.5" turbonetics
Turbo-3076 .63a/r external gate ( I heard of a 78a/r divided T3 housing?) .82 laggy? or possible bullseye S258?
no head work yet, until funds get replenished
upgrade my Unitronic file to 630's For the major components I hope I have everything covered, what do you guys think or suggest?