Is the body shop going to work on it when they aren't busy or is it a dedicated rehab? I have found that shops tend to take in fast money and put your project on the back burner several times. Long restorations (over winter months) take up shop space I was very fortunate to have found a retired body man who did my sheetmetal work in his own garage. I was very lucky to have found him and he turned mine around in six months. Basically doing the same work as you are having done. Hope you have the same luck. Tinmannz is correct about the rust, it hides everywhere.