Wow! That sounds like a lot of planning/experimenting before I could come close to being as finally tuned as all that...
I have a few different before ride meal options.
1) If the ride/run/walk will be early, and not too long. -- Eat nothing. This is the Bill Phillips - "Body for Life" plan. Eat about an hour after you are done working out. If I do this 2-3 times a week, I can loose about 1-2 lbs per week. But the ride has to be ~60 minute ride. Going hard is ok. If you ate plenty the night before (and emptied) this would even be a good plan for a race short race. Though hydration should be optimal. I've heard a lot of arguments against doing this option. (But it really works for loosing weight
2) If the ride/run will be easy but long - Eat everything. I'll fill up with pancakes, eggs, orange juice, and milk up to 1/2 hour before I leave. The workout will startout slow (110bpm-120bpm) and will not require nutrition for the ifrst 1-2 hours. (But don't forget to continue to hydrate.)
3) If the ride will be typical of a CycleFolsom "A" group ride of 6 hours or more - Be careful. (This is the unrefined section for me.) What "works" so far is a 20 oz serving of Perpetum followed by 1/3 C of cooked quck oats combined with a banana. I'll do this as little as 30 minutes before leaving. (For an equally intensive run, only the serving of Perpetum would be used.)
Ideally the first meal is done and emptied before a ride, but I don't rise early enough to accomplish that feat.
=- Curt