LeadGuitar06GT

Top 10 mods I'd probably go for are:

1) C&L or Air Raid CAI
2) 62mm Throttle Body
3) Intake Manifold (FRPP)
4) Charge Motion control plates
5) Borla ATAK catback exhaust
6) Flowmaster off-road X pipe
7) Flowmaster Long Tube headers
8) Comp Cams, decent set of ***** Thumpers
9) Underdrive Pulley
10) DSS carbon fiber drive shaft

But there are so many more mods that you can use (read: that I want!)

3.73 gears
Eibach Pro system Plus (suspension kit)
Strut mount kit
Strut tower brace bar
JLT Oil separator

Not to mention the upgrades you'll need to back up that power!

Performance brakes, Brembo, Baer, Wilwood, etc.
FRPP Radiator, Fan
You may as well go with racing plugs, coil packs to hold that power, especially if you're gonna drop a super charger, turbo, etc.

96lb fuel injectors


What am I missing?

Definitely on the same page as OP though, the modding bug bit me hard!

CPTCO

If I was starting from scratch, I think I would supercharge first and buy the rest later.