Argosy steel cap rust

I am starting to repair the surface rust that has collected at the windshields edge, and around the marker lights.



I have sanded the rust off and etch primed it. Pulled up the marker lights and cleaned underneath. Plan is to run a light coat of bondo over it to match the paint thickness and sand clean. I plan on painting it with roller and brush. This not an A+ resto job, just want to clean the rust and repaint.



Pretty straightforward but just wondering if anyone else has done this and has any advice/tricks? How about the paint to to use(it is Argosy beige) I'm sure it won't match.



Thanks in advance,

Chris