For anyone interested, here's a little progress report,

Firewall is pretty much good to go, the common rusty seam was a challenge, spent a good bit of time prepping and painting the inside and up under the upper dash area. All that sprayed on red glue was tough to remove. A entire day was spent prepping just the rear seat inside panels, they were thick with glue, and super dirty. 
I'll seam seal next year, then topcoat everything. The factory spent very little effort painting all these unseen areas, so they reallylooked like crap and were covered in light surface rust. I removed it with Phosphoric acid and Scotch Brite. 
A little more cleanup on the floor pans underneath, and I'll give them a spray before it gets too cold.
I replaced the drivers pan, 1/2 the left passenger pan, fabbed some patches at the toeboard. A little more work is needed on the pans, left and right at the front seat mount areas and the passenger toeboard.
 This will be it for me pretty much for this year, more or less done from the firewall to the trunk divider. Nice to have it coated in a good epoxy though, even if there's more work to come. Help keep the corrosion at bay.
Little by little she's coming along. I'm pleased!
To get to this point took at least 60 hours.

If only I had a shop.

Cheers, Mark.