Emily, I would say that 30 seconds isn't to short of a time to backup a 800 person project. What speed is your system. I have a 450 and a 20,000 plus project, without images, takes a short time.
Each time you run a project it is listed under the File button at the bottom, just click there to start the one you want. Or file open, find the project file with .pro on the end. Only one is backed up that has been in use.
With only 800 persons is there a reason you have two projects?