I hate to see you give up on your EFI. It takes a lot of patience.
When I first got my set up (TWM/FAST) it was in speed density. After the first summer and 6, or more, sets of plus I knew that I needed to understand the system better. The engine was running so rich that a typical drive would cost me a new set of plugs. Had lots of backfire... Hard starting.
This spring with the help of a really smart friend I moved to Alpha-N. (Actually against many peoples opinions. Telling me that Alpha-N is for the race track. Some even suggested completely staying away from injection.)
The program is nearly perfect. No backfire, no sensitivity to altitude, plugs don't foul, LOTS of power, fantastic idle and starting, and much improved gas mileage!!!
The initial change over was rough. I was discouraged at first by the lack of power. With my laptop sitting in the drivers seat I made dozens of logging runs. After each run I would sit down and replay what happened and make changes to the maps. Yesterday I took a run with the Cobra club on a road that went over 8000 ft, my performance was flawless. Ask anyone in the club if my car is fast...
I think the bottom line is that you need to learn everything you can about what you have. Take input from everyone, but weigh it carefully. Then actually get your hands dirty until you figure it out. I'm am happy that I kept trying. The end result is better than I could have imagined.
When I pop open the hood the stacks have an "oh SH!T" factor equal to none.