Am I crazy for doing this on a 65 Barracuda ?

Well, I'm excited to get to this point as you can tell. :) I started on this project about a month ago and posted here to give me a little more reason to stick with it. I've done some body work in my younger years that I wouldn't be proud of.

I retired from being a finish painter doing the more detailed work in new and existing dwellings. I know cars are a whole different story but I think it helped to be detail oriented even if I drew the line to keep this an alternative way of preserving your car without spending a lot of money you don't want to or can't afford to put into it. A lot of people view this forum and a google search on just about anything Mopar will lead you here, so I hope I encouraged someone to do something with their car that they would otherwise have let further deteriate.

All the supplies came from Menards and I purchased a couple of parts from sponsors here as well as on ebay. I haven't figured the total cost but the supplies were only a few hundred dollars. The value of the car certainly increased more than the money put into it.

By keeping as much of the original metal in the car and using no more filler than needed the car will be preserved if someone would want to go a different route in the future or leave as is.
Did you use a white paint from Menards'?
That Acrylic Latex can be some tough stuff, but I doubt if gloss lasts.
Years ago I read about boat use with outdoor exposed winter storage, over an epoxy resin sealed wood hull, that had lasted an impressive amount of years, by that point.