Hey, I think they are being a little hard on you. I doesn't look that bad in your pictures and you sound very capable of making a decent usable MH out of it.
There are many on here that can't fix anything themselves. I would say the tires will be your biggest expense. Google RV salvage yards and you may find some of the stuff you need. Mobility RV in Hanlontown, Ia. is a good place for NOS Winnebago parts. Heck, you only have 2G in it, as long as you don't put big $$ in it You should be able to get a lot of use and enjoyment out of it.
P.S. The delam is very hard to fix but if you stop the leaks it shouldn't get much worse, it is just unsightly.