Can you weld? if so, you can do this yourself, its a bit of work. Check out Birdmans restoration.
There are tons of videos on youtube about body repair. if you have time and some of the right tools, you can do it, there are also quite a few shops you can take it to. My experience with shops is that if your on a budget, having different shops do the stages of work is best, metal body shop, then take it to paint and do all the prep. You are going to have to find shops that dont advertise and are small, like you said, those body shops only do insurance based collision repairs. The insurance on cars, killed the every day body shops. I see your in DC. i am about 1 hour north east in hagerstown/frederick, R&F bodyworks is decent at body work but take the paint to someone else if your picky. Otherwise thats who i recommend. If you dont have a welder, i do, a very nice one your welcome to use if you have a place to store it indoors during use, i can help you out a bit here and there if you want.
They quoted me 4700 to repair all my rust- i have LOTS OF IT, and a full respray.