Atomicorp

Hello, Is it possible using the atomic plesk repo to upgrade a server running plesk 7.5.4 to 8.2? Reason I ask is becuase we have servers hosted at rackspace, and they state for them to do the upgrade it will require going from 7.5.4 to 8.0 to 8.1 to 8.2, and will require 4 hours of down time (which...