opinions needed regarding available EFI for a small block

Just got a Holley Commander 950 TBI fired yesterday, and to day I got an inverter, my old laptop, and the cable routed into the car so I can diddle it. I have some ways to go. It runs, idles and drives, but has a flat spot at low speed and is way too lean at WOT

http://www.forabodiesonly.com/mopar/showthread.php?t=209528&highlight=commander

http://www.forabodiesonly.com/mopar/showthread.php?t=209237&highlight=commander