Change of plans.

I see you are from Wisco as well so you probably hate rust as much as I do lol. The car is really solid underneath. It's nice to not have to worry about fixing frame rails and crossmembers! And don't worry, my wife has turned into a garage widow once again :)
Oh, yeah. Did one that needed frame work a few years back. Never again, I'm not that young (or patient) anymore. I could've built a full frame for it (ala stock car) in less time than it took to fix that one. Takes the fun out of it after a while. Live and learn! Looks like you'll be relieved to be working with solid metal again, even if it does need a patch here and there.
Enjoy, and keep us up to date on your progress!