I am about to buy a 1969 airstream sovereign ...need advice before purchase

I am extremely new at purchasing a trailer, I would like this to be a fun project. I fell in love with the airstreams and found one that I could defiantly see myself owning. A few concerns the hitch and frame has rust on the outside. Doesn't look like it has made its way through. A lot of vintage airstream pictures seem to have this rust on the hitch. Should I be worried? Or is it an easy fix? Also the metal frame that holds up the step to enter into the airstream does have rust. This has made some holes. That part seems like I can attach a new step and it will be fixed completely. Any advice? Thank you