Well, this set up is almost two years old now and I cannot make it larger where it is...have new kids that need diapers/formula/day care....so the wife and I have decided to downsize this operation a bit.
I am currently picking out which corals will make the transition as well as which fish and will be selling the rest (this part of the process has already started)
The plan is to go with a 36x36x28 (I think they are 28" high) 150g cube. The tank will be going to the immediate right of where the current set up is in the kitchen and viewable from 2 or 2.5 sides. The sump area in the basement will also be reduced, currently have 250g of water down there, thinking 100 will be enough and will stop lighting that with a 400w MH bulb.
The montly cost of the new set up will be considerably less.
Then in about 4 - 6 years (no formula/diapers/daycare) we will be putting a 300g or so tank in the opposite wall between the dining room and family room in the main part of the house.
The current dining room table/chairs and china cabinet will be going away for a new smaller version of a dining room table.
So...thats the current plan, we are in no hurry as it was just decided this week we need to do something like this after one of the cars decided it had run long enough (140k miles) and we cannot afford to get a second car payment.
First step will be reducing the amount of livestock, then removing the current display from the dining room area with all live stock relocated to the cellar (similar to what Chris did when his tank busted...they will all live in the 300g tub). Then we will finish the "Bar" which is what the current unfinished stand will become. I will be looking for a deal on a used tank with the approximate dimensions mentioned above and/or eventually pick up a new one (Marineland).