Holley is the easy route for sure they made some nice stuff. If your like me and need the cheap route then something in the Megasquirt Lineup is more labor intensive but has massive savings. I had to build the ECU and Harness for my setup but my $$$ per feature is incredibly low and reliability has been perfect over nearly 6 years now.

I would go with the smaller throttle body, its hard to modulate small amounts of throttle with a big single blade like that accufab but it won't be hard to swap between the two to test them out.