Is it worth saving?

[muddpile]

I am planning on ordering all new sheetmetal where it is needed for my truck, and began to question my project as I got into it. The truck has a good frame, powertrain, and box, but the rest is questionable. When do you give up and look for a different cab? Mine has rusted away pretty bad over the years, and here is a list of what's wrong:
-Rocker panels virtually rusted off (huge holes)
-Inner rockers are pretty swiss-cheesed
-Cab corners are basically gone (you can see the road from inside)
-Where the rocker meets the floor, there is a good inch of metal gone the length of the cab (the weatherstrip hangs in the gap)
-Both floorpans have a few holes towards the outside edges
-Three out of four cab supports have holes in them (just at the edges, nothing structural yet)
-Drivers kick panel is missing about the bottom inch or so

Thats all I can see, and I have the interior stripped out right to the metal. What's everyone think? Is it worth buying patch panels and welding it back together? Thanks!