[Rotaryrocket FC]

Alright, I have a project on my hands and I dont even know where to begin.
Im building a Street Ported 13BT and I would like to modify the turbo system, as well as the components involved with that, obviously.

I guess Im already bored with a factory Tll, even after owning 3 N/A's. (Ive had a bit of racing backround since the day I got my license. Im now 21 yrs old.)
Objectives to the car:
I would like it to be somewhat streetable and decent on gas mileage. When I say decent on gas mileage, I mean 12mpg would be okay.
I will be autocrossing but more so, road course racing it, so power coming on late is okay to a point. Basically boost coming in as late as 4.5K is fine with me.

I need some guidance from you experienced guys here. I know I have alot to learn but I cannot wait to get started on my first Tll build. Im a complete n00b to modifying a turbo system. Heres the things going for the build.
Im having my 13BT street ported and the target snail id like to run is a T04R.
With sooo many engine management systems out there, im overwelmed with what to go with.

Things I would like to learn more about:
*Engine management systems
*Ignition, Oil, and Fuel upgrade tips
*Tuning responsabilities
*A/R ratio's fitting to my needs
*Etc.

Thanks so much for the help in advance guys! I really need something to guide me in the right direction, so it looks somewhat like I know what Im doing here.

-Dale