Thanks for the compliment, Ricklandia. After the trunk lid, I have a rust free fender to practice on. By then, I should be ready to do the rest of the car!

For the record, I picked up several grits of wet sanding paper at my local Pep Boys - 400, 600, 800, 1000 and 1200 grit.
I am using Stop Rust Rustoleum and odorless mineral spirits. It dries rock hard the same day, I get zero bubbles, and ,little to no orange peel.
I will mention again, that I run a dehumidifier in my basement full time, so there is very little excess moisture in the air while I am doing this.