Purchased 1993 Coachmen Diesel pusher for 4k now what?

That was a great deal for sure! If that is the vinyl ceiling with the from backing. I would replace it all with a carpet ceiling. I had replaced mine took out the cabinets then put new thin wood panels up then the rv carpet. on the edge of the walls use corner molding. Is way if it ever leaks again the most you will have to do is shampoo the stain out. once that from backing of the other gets wet its don't for. and hold mildew..