Don't get a new vf40 unless you are dead set on staying absolutely stock.
If you rebuild it, the best bet is likely to go through BNR. For $750 you can grab a 16g versus the $350/400 you'll probably spend on a used vf40. You can also pick up a vf52 (wrx turbo).
As you know, you'll need a tune for anything but a vf40/46, but you'll probably really enjoy having the tune.
Most foolproof option is probably a vf52 ($600-800 used on nasioc) with a simple off the shelf tune from infamous ($150 i think). Oh, and why a turbo timer? Totally unnecessary.