Is this cab repairable?

[hpcgmc]

I'm starting to work on the rust in the cab of my 67 GMC. The rust is pretty bad on the footwells, kickpanels and rocker panels on both sides. Here are some pictures.

It looks like I'm going to have to replace the footwells (or maybe the whole floor), kickpanels and rockers. Are there replacement body panels for the kickpanels? Should I give up on this cab and look for a cab without rust? I expect a rust free cab will be hard to find.

I'd prefer to keep this cab, since I feel it's the heart of the truck I've had since I was 14. I'm not a welder, but am considering learning just for this project - is this something a novice welder could repair?

Thanks for any input.