Kevin.
I moved my tank last week, 70 miles. Albiet, no where near how far you will have to move your tank, should you decide to do so. I will only be at this location for a year. This is only after I had my (completely non salt water experienced) parents taking care of my tank for a couple months.
First, the livestock I have or had at the time were a magenta pseudo, a true perc, a cleaner shrimp and a serpent star with assorted crabs and snails. No corals. I think I would have been much less willing to leave the tank, or move the tank had I had a full complement of SPS or LPS.
Anyhow, during the two month stint with my parents, the tank did relatively ok. I didn't make the folks do any additives, only basic feedings. The tank wound up having a serious algae problem post parents. ie: when I returned. But all the livestock fared fine.
The move was less successful. I heard about high mortaility rates, but for some reason I though I would get past them. One tip, remember you are moving in subzero temperatures. This means that somehow you must stabilize the temperature of the water you are holding your livestock in. I think this is what got my guys. Post-move, my cleaner shrimp died and so did my pseudo. This tank is having some serious destabilization problems right now, but I figure hopefully it will balance out.
I hope this helps. I will probably have to go through this again in six months.
Jenny