flamin-roids

So tis the season for my cars next makeover. Last year it was a successful 5 speed conversion complete with 2.5" exhaust. Anyhow I dabbled with the option of going turbo when it dawned on me that I'm just going to buy an FD in a couple years so why not have a reliable N/A daily driver. Also this is on a budget. From what I understand the stock S5 fuel system will support more power than the motor is more than likely to make in N/A form. So for the price of an iffy j-spec TII motor (just the engine) I can street port my motor (half bridge?) and add a greddy emanage or a S-AFC. Along with little odds and ends. I've got intake, exhaust, flywheel and wires covered already and any engine problems will be rebuilt during the porting. So what I'm asking is with a piggy back system will I be able to have control over ignition, duty cycle, and redline? And will I require more than a S-AFC and a street port to pull off respectable gains?