I would get a 70mm throttle body, it's pretty much good for all setups, so you won't need to re purchase if you get a supercharger.
I see no point in using a 190lph pump, when 255lph pumps cost nearly the same.
Buy the pump under the walbro brand, which is who makes all the pumps anyway.
Alot of times on ebay you can get the pumps for well under $100.
I would not mix and match with all 3 pieces of the exhaust, you leave yourself open to fitment issues.
SLP is also known for being a little on the obnoxious side, but i've only heard it on 4.6's and it's not a sound that i liked.
I see no cam there. My thoughts are always custom, add $300 for that.
As for upgrading the t5, the only kits that give it any noticeable upgrade are astro and Gforce, both of which are going to cost alot.
I would however buy the edelbrocks used if i got a good deal, same as the gt40x.
If you stay with the NA setup, i don't see the need for the msd ignition, i have the 6al, and i really feel that it didn't do a damn thing.
For $1200, i wouldn't buy the edelbrocks, not that there is anything wrong with them, just for that much loot, i'd prefer the afr's or Track heats.