That header and exhaust are complete junk and will choke of a decently built engine.

At the bare minimum, a JDM ITR header or DC JDM header should be used along with a 2.5" exhaust. Check out www.kteller.com for reasonbly priced, mandrel bent, stainless exhausts.

CTR pistons have a lot of mass and are not really ideal for an engine build IMO. You'd be better off going with a forged after market option (CP, Wiseco, etc.). Since you're going to sleeve the block, it wouldn't hurt to go with a slightly oversized piston and get a little bump in displacement along with the compression increase.

N/A is expensive. I dumped a ton of money into a B series in the recent past that made a lot of power and after I was done, the car still wasn't fast enough. Just a bit of advice from my experience.