cleaner wrasse are not as hardy as every one seems to think. They live maybe if your lucky 6mo to year at best. Longer and you've got a good one. Mollies are technicaly braskish water fish, tho sold as freshies, they can be kept in SW IF they were either A) raised in SW or B) aclimated over weeks from fresh to SW . I tried this a while ago without success. Also they really don't have the aggessive tendancies that SW fish do and can get beat to death by a damsel. .
The corals you added.. brains will close up for days at a time after being moved. It may open up and be just fine. I don't think 6 coral is to much of a load in a 55.(depending on the size ).. If you have plenty of filtration.. rock ect. You say its been up in one form since 2003 and in it's current location for 10mo. When you moved it did you save water.. sand ect to reseed the tank or did you start over with all new? If you "bingoed" with old stuff I don't think it's a problem with the load If you started new than maybe it's just not done cycling .. in that case it could be to much added at one time. I moved my 55 into a 125 I used all the rock ect and was up and running with in less than a week.
The other thing you might want to look into is this.. if you did use rock ect from the old to set up the new.. you might have "old tank syndrome"... maybe changing out some of your substrate might help. We also went through a bout of old tank syndrome.. the substrate actually had turned into slabs of rock! Replaced with live sand and things perked up again.
Just things to mull over while you wait to get your water tested.. oh and you might want to get your own kit to keep track.. Let us know the out come of the test and we can delve ito this a little better.
sarah