Do you have a bunch of free the available?
Do you have a carport and compressor?
If not then a DIY paint job is probably out of the question.
I am no expert but I will offer my backyard repair opinion. There's nothing that I am aware of that will save that paint.
To save the sheet metal from rusting you might try wiping the car down with Ospho and then neutralizing it completely.
Another method would be to get a weed sprayer and coat the car with a creeping rust protection coating like Fluid Film. It will be messy but it will protect the sheet metal. You will have to renew the Fluid Film from time to time but it will save the sheet metal from moisture.
For advice from professionals and accomplished DIYers try post your question on the SPI forum. But I will add that as great as the SPI forum is there are some folks that will tell you there is only ONE way to do things. Which in the real world generally isn't true.
Good luck with the car.
Any more photos of it?
http://www.spiuserforum.com/index.ph...s/shop-talk.6/