Dream truck,or nightmare

[TN70C10]

First let me say Hi. Im new here but have already found tons of useful info and am very glad to be here. My dad bought a 70 C10 new and has had it ever since. I drove the truck all through high school. Its been setting up for the last 3 years and has rusted more than I was hoping it had. Anyway last week he gave me the truck and ive been looking at what its going to take to get the thing back the way I want it. Its going to need alot of new metal. The part that concerns me the most is that the rain gutter is rusted through pretty much all the way around and I have yet to find a roof skin in any of the aftermarket sites or catalogs. Im thinking about looking for a AC cab anyway but just in case I have to use this one or cant find one in better shape, what are my options? Anyone know where I might can find a weld in cab top? Thanks