need help.surface rust temp. spot repainting.

[Brother Mist]

Hello,
I have a few spots on my '59's roof and doors where the paint is peeling off down to bare metal, yup a poor re-painting job by previous owner. These spots are starting to get surface rust.

I can not afford to have my car sent to a body shop for body and paint work right now, but I want to get on top of these few spots before they get worse. A temporary fix till I can get it done by a pro.

I dont have a garage to use for a temp. paint booth, so I am looking for a spray can fix for now. I know I could go to the local auto parts store and get some regular old primer and paint... but is there a better alternative?

I know it will not look very good, but I'd rather stop the rust now and have a bad paint job then let it go till I can get it done correctly and have major problems to pay for.

Thank you for the help,
Brother Mist.