Site Backups with snapshot pro

Hey Gang,

I am using snapsot pro here and I am just not comfortable I'm backing up the whole site here as my archive files are 225k which is ridiculously small.
Do I need to check include all selected files and check all the boxes (I know this backs up inactive themes and plugins also) or do I just need to check the include common files (to get everything that is active and ignore the inactive (does this option leave anything else out)?

Sorry I am try to make us of my wpmu membership but used to wpclone which just backs up everything unless you exclude it. I don't want to get caught with my pants down here.

The goal is if I need to restore It would be from a fatal crash and I would need to reinstall wordpress, install snapshot and then pull the backup in and have the site be there and fully functional with all the necessary files, media, databases etc.

Thanks