Eric,
Like many others I've thoroughly enjoyed this thread. I read every post over about a ten day period. I didn't want to binge read, but rather savor your progress and your descriptions. You did a wonderful job of capturing the highs and the lows one goes through in such a project. I think you've done an amazing job, and your daughter's deep investment in the project made it that much better.
I said this is a different thread, but I recently purchased a patch panel from Real Steel Cruiser Parts for the right ambulance door on my FJ40 and was very disappointed by the so-called "quality". It didn't fit "fer sh*t". Put differently: Major buyer's remorse. It was a waste of money, and I don't like wasting money.
I suspect I'm pickier than you, but even so I think you'll be very disappointed how poorly the patch panels line up with the contours of the original Toyota door(s). Yes, they are significantly cheaper than buying quality used doors, or aftermarket reproduction sheetmetal, but Benjamin Franklin's quote is dead-on accurate "The bitterness of poor quality remains long after the satisfaction of low price".
I wish I had taken pictures before I started the process of trying to modify the patch panels to actually match the Toyota contours so I could illustrate what I'm trying to describe, but I didn't....
You might consider waiting for some reviews of the sheet metal products being introduced by Topnault (TP Auto Parts). Yes, it will be more expensive, and not by a little, but I suspect you would be a lot happier with the finished product .
Good luck, and I look forward to following your continuing progress!