Your copying speed is limited by the specs of your seedbox so there is no real way of improving this. If you're looking for a simpler method with less steps try raynrach15's method or copy files through rutorrent.
'quick' as in an app or script to copy torrents into another directory... That way I can keep seeding but still stream certain content!
I'm happy enough using the cp command in ssh for the minute... It was just in case I was on my mobile!