Ben,
1st......
, for saving another 914
2nd.....make sure your tetanus shots are up to date
3rd.....the DWD is real, first you just want to take care of the structural rust and hell hole, then you think, why not attend to the trunks, then its, well, I might as well pull the gas tank and do the cowl, then when you get nice fresh body seam sealer, primer, then final coat on, its.....sheesh...I can't put an old nasty pedal cluster back in there, or grungy calipers, or a fuzzy gas tank, or a cracked dash top, and on, and on, and on, and on...........
Good luck and remember, there's a strong, supportive group of us on this Forum to offer support and advice.
Paul