What Performance mods should a guy start with?

Hey I have a rather stock 08 Tacoma I have cold air but nothing else. I work in the Alberta Oilfield so I have very little time to do anything.

I was wonder what Mods for performance would help me out the most? I noticed a little bit of gain with the cold air. Louder for sure but runs better too.
Obviously Exhaust would be next any recommendations on which kind to get? I was thinking TRD

After that Im not sure where I can get the most bang for my buck?
Throttle body spacers?
Supercharger?
what else?

 

Long tube headers will give you the most hp/tq out of any N/A performance mods.

 

supah chargah

 

I have a magna-flow which seems to be the loudest.
When I went to the shop we tested a flowmaster 40 series, a cherry bomb, and my magna-flow out. The magna-flow seemed to be a little bit louder. I'm very happy with it, and it sounds way awesome with the cold air!
I have the Throttle Body spacer as well, it does look and sound cool (makes it sound kind of like a super charger) but I'm not sure if I gained much from it since I installed the K&N cold air and Spacer at the same time.
My mom has a supercharger on her 2003 Tacoma and it made a huge difference, only if you want to to spend that much money.