need some advice on present purchase to benefit future build

so right now i have all of the following bolt-ons that are listed in my sig minus the accufab t.b. (hasn't gone through yet), but i was thinking about it and want to make sure i'm not going to big on the t.b. i plan to add some VT cams N/A grind, possibly some nice heads, and a PI intake. with this setup would a 70mm benefit me more than a 75mm? also i may go with the gas if i can afford a nice wet kit.
i'd appreciate any advice. remember this will be going on a 97 with NPI currently.

thanks,
Gus