Marc, I'd push toward a port injected FAST kit or a Megasquirt on a Victor EFI, but realize it needs porting to be real strong.
As far as the TB systems, I have installed a few, and although I initially was hot on the FITEch with laptop programming, after talking to them, it's really not as adjustable as you would think with the laptop. That doesn't make it bad, just after understanding what theya re doing with the laptop vs the contoller, the programming relies so much on learning, that it really doesn't want you inside it. However, a port injected engine, you can do some great things to balance drivability and power, so I am all for it if the budget allows.
Longer runners with a dual plane could potentially help, especially in a 440 inch motor, by matching the runner length to the rpm range a bit better, (Barry's testing) but I can tell you, you will have absolutely no unhappy moments with a ported Victor at part or wide-open throttle with good tuning. Have it rubbed on though, because they need it out of the box
