Not sure of the scope of work needed but you might want to contact a person that repairs RVs or camping trailers.
I am currently restoring an old Airstream trailer bit by bit. A lot more to it than I thought. Sometimes I wonder about the time,labor and cash is it worth it? I could have bought a new one by now, and I don’t even like camping. It’s a hobby I guess.
Take a hard look at what is needed and cosider your options. Chow Jim