Anyway- now that you've lectured; would anyone be interested in helping me plan what I'm trying to do: NOT have such long driving days.
You laid out a trip where you have repeatedly planned to drive 700, 800, or more mile driving days. Doing that repeatedly over a short period of time is every bit as dangerous as driving 1,000 miles at a time. I don't know how you can claim you're not trying to have dangerously long driving days, when you look at the proposal you laid out in your initial post.

Being sleepy is not the only way that fatigue shows itself. If you are actually sleepy behind the wheel, you have gone way beyond the point of fatigue. Taxing is exactly the point, can you do a stressful job for 15 straight hours and think you're still doing your best work at the end?

Yes, driving hours do make a difference - and the hours I was talking about assumes Interstate travel. If you're driving on back roads, you need to significantly reduce your mileage even beyond the 600 miles that professional drivers are allowed to cover in a day.

Certainly, we're willing to help you create a great trip, but the point you didn't seem to get is that what you laid out in your first post is filled with drives where you will be a danger to yourself and everyone else on the road, and that's not much of a starting point to get help from the people with whom you will be sharing the road.