I have a few comments to go around, I have been fighting other fires lately and have been trying to get some miles on the car!
At a high level, I need to learn the in's and out's of the Megasquirt platform to best suit my needs. Primarily, I would love a closed loop and open loop timing table, I just need to figure out how to do it. My double-overdrive trans wants to run in the "high idle" area when going down the road, I need to help it define when I'm idling and when I'm at 60mph @ 1,800rpm.
The Hemi does not want more than ~22° or so of timing, hence why it may look "backwards". My low load will take the higher timing with no concern for damage. This isn't an LA engine that needs that high timing.
The blue area around idle is helping control any surging idle. Below target rpm, it bumps timing to recover, above, it retards timing to bring it back down. I am up to 350 miles on the entire build and have spent minimal time tuning the spark tables, I'm getting there however.
I have 200rpm starting so that my cranking timing is defined as very low.
I'll go through the responses in more detail this afternoon and see if I can fill in some gaps!