Got the door together, and aside from the latch coming out a little crooked (Not sure how that happened...) it looks good. I ended up doing seim-gloss white on the inside, and gloss on the outside, and I fogged the outer window frame with some semi-gloss black to freshen it up too.
Then I cut up the old upper door surround and made a 2-3/4" wide piece to go across the top of the open door frame. Worked out pretty well, as it was laminated with fiberglass on the outside, and I preserved some overlap to hopefully help seal it a little better. I used my favorite woodworking tool, the Kreg Jig to be able to screw and glue it in place.
To cover the opening, I bought a yard of Weblon in Driftwood. That's what I want to use when I redo the soft sides, so I figured I'd check it out. I like it!! I used some industrial stick-on velcro on the top and sides and velcro'd it in place. Looks ok, and should hold up just fine.
Still need to cut off the inner velcro flaps, and I just bought a piece of trim to go completely across the outside and overlap a foot or more on each side to help tie it all together. After I get that on, I can paint the back of the camper and then put the door in. Just waiting on some 3/4" butyl from Amazon for the door install.)
The other three sides have been cleaned up and painted, and I think they look pretty good.
I might put a black stripe on it to break up the white a little, and I have some black vinyl Camco trim ordered to replace the old stuff. (Four Wheel does it that way, and I think they look really sharp!)
Probably see if Hallmark will sell me a decal or two for the front and back, just to break it up a little more.