I believe you should be able to. I was just attempting to upload it and test it and my ftp connections stopped functioning in mid upload, so I have not been able to verify this yet. I know you can add apps at any time then install them from the admin cp, so it should all be possible. So I did a little more testing and checked some things out. With this copy, it appears that everything works alright, but I still need to test the upgrade and adding the apps in. I'll report back when I get that tested.