Body mounts or rust repair?

[OLDGREY]

I have been a registered user for about a year. I finally decided to help support the cause. This forum has certainly helped me head off some issues with the build of my 72' Jimmy. The question I have for the members is this. I have plenty of rust repair to do. All the typical areas. I also need to do the body mounts. Should one be done before the other or all at once? Your advice is greatly appreciated. Thanks!