First off, that sucks you're having problems. Tony covered most of what I wanted to say (plus the stupid server crashed last night while I was typing out my epic reply). While chatting on msn he and I have talked each other out of quitting several times over the last year probably.
RTN/STN is a bitch.
Secondly, moving tanks is a pain in the arse. Thats nothing new. However, I used all the same rock etc (minus the sandbed though) when switching my tank over and I had zero cycle. As long as your rock is cured, I would imagine you wouldn't see much of a cycle if any at all. Even when I've done tank switches starting with new sand (same rock) I haven't seen a cycle.
Is the new system is going in the same place as the old?? Perhaps you can get some buddies to coral sit for you for awhile while you get everything in order? If you're putting the new tank in a new location all I have to say is "reef meeting!" Lure people with pizza and beer! Us reef nerds are always game for stuff like that (heck, even minus the pizza and beer for me!).
In the meantime, I think the RODI will really help your system and likely you will wonder why you didn't do it before (at least in my case, your tank looks pretty damned good for tapwater). Can you possibly change the flow in the tank or increase it? That might help.
http://www.advancedaquarist.com/2006/6/aafeature2