We are currently on 10.1.2228.19, how do we know when we are eligible to upgrade to 11?  Also since this is upgrading to a new version (10 to 11) is it going to take longer than a standard hotfix update or about the same?  We just need to know how long to expect it to be down while we are upgrading.

We have 7 technicians and just over 230 devices.