'70 Dart 392 Project; what direction?

Here's a question for you all.... Does the throttle body blade have to be 100% flat to maximize airflow? I'm sure the megasquirt has a calibration for 0-100% throttle no matter where the valve ends up at. I'm pretty sure with a slight adjustment I can get the throttle body valve to slightly below parallel. Thinking of all the twists and turns that air has to make to actually reach the combustion chamber, I'm wondering if it's even worth making sure it opens up completely flat. All the airflow throttle body testing I've seen show that they're not really a bottle neck for power/flow...

I can get about 1.8" of travel with my stock pedal, and throttle body opens up with about 2.1" of cable travel...
Bracket won't be here till thursday and I"m gone thursday-sunday so won't be able to work on the car until next week. In the mean time I ordered a Cold Case 755K radiator/fan combination from jegs and a bulkhead fitting with 10AN and 6AN fittings to run my AC hoses through to the Cold master AC unit under the dash.

Mike