The front window cover can be mended with fiberglass mat and resin, it's too nice to just replace.
Removing all the old white paint and polishing it to a brilliant shine, then coating it so it won't immediately oxidize is not trivial. You would have 100's of hours into a project like that. A better solution is to leave the existing paint on, prime the exposed parts. and repaint. I repainted the bulk of my 22' trailer in an afternoon but I have professional spray gear.
At this point in your RV career, you should be looking at the roof, siding, and windows to make sure there is not ONE little leak. This will be the most important thing you ever do to keep the old gal in good shape. Look around on here to see what others do.
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