I don't think you can re-use the front skin, The delamination causes the skin yo distort and it would most likely crack if you tried to smooth it out. If you don't want to spend ridiculous amounts of money for filon or aluminum, you can use FRP. At $33 for a 4 x 8 sheet, you can do the front for under$100, including a trim strip. (I got lucky, my RV guy had some remnant fiberglass). Your side bubbles can be epoxied back down. There are several videos on YouTube that show how to do it. You may or may not find water damage under the front skin. Mine only had damage on the passenger side front corner. It was caused by water getting in around the front speaker which was just screwed to the side. No gasket, no butyl tape, no silicone - nothing! 11 years of water caused quite a bit of damage. We peeled the skin back to the dinette window and replaced the rot. Here is a pic of the front of mine after the skin came off. PM me and I can walk you through what he did to replace the skin.