I hear ya but you can buy a new take off TVS for $2000 SC to filter and porting is the best way to max a TVS combo.
I have been debating the mod plan but I think I'm committing to the normal bolt ons now (TB, CAI, 10% lower pulley, headers Hpipe maybe mufflers) then porting TVS with an upper pulley and E85 conversion in spring.
Decisions
-J
you should save yourself some time and just go 15% now rather than 10 then adding an upper down the road..