A few questions regarding the metal floor?!

[AKTrainum]

My plan is to initially clean the metal floor of the bus. Which cleaning agent do you recommend I use?

Then I plan to fill the holes from the bus seats, etc using JB weld epoxy liquid or JB weld steel stick putty. Which of these do you think would work best? Or do you have any better suggestions? I'm going to cover all of the holes with pennies once I fill them.

Next, I plan to use a rust converter like Corroseal or Rust Converter Ultra followed by two layer of Rustoleum paint to complete the job. Is it necessary for me to use a Rustoleum primer prior to the paint or will the rust converter act as a primer as well?

Thank you for your help on my skoolie build journey!!

[o1marc]

IMHO, JB Weld is too expensive for this job. I just used a construction adhesive and pennies. Rust converted, rinse, paint.