To the original poster:

Get the NeedsWings CAI (single or dual - depending on your budget) first. Why? Because the stock intake aparatus is already starved for air. You need to uncork it before you put a pulley on your supercharger to draw even more air in.

Then if your budget allows pick up a pulley. I would say that it is worth it to even do a single CAI rather than a dual if that will be the deciding factor of whether you can get the pulley or not. Get both CAI and pulley. You won't be disappointed.

If you can afford the difference, get the 178 pulley rather than Code3. It performs a little better AND it leaves you the option of adding a mid-size Code3 later for even more power. If you get the small Code3 (the original size Code3), you're kinda stuck with it unless you can sell it. And the market's not that great for used SRT-6 mod parts.

I also wouldn't worry much about the cooling mods, unless you're a hard core racer (track or drag). They can always be added later. While I wouldn't take my NeedsWings super cooler off, the power I get from it (or rather don't lose because of it) is insignificant when compared to the power gained from the CAI and the pulley.

Just my 2 cents.