As goofy as it sounds, I would have bought a different house that had the proper space for a large tank. Buying a house with a finished basement really only allowed me the space for a display tank of 90 gallons. IMHO anthing bigger than that and you need a proper fish room for all the goodies that go along with a large tank.
In our next house I want a walk out basement that is unfinished so I could do a 300+ gallon in wall tank with a proper fish room (I think we are still 10 years away from a new house though
lol)