What I'm planning on doing (over the next week or so) is to move all the fish from the 430L into a ~170L and a 1/2 wine cask on the porch and plumb them together, this is the cold water tank so I'm lucky there. then move the 3 x 2ft and the nano tanks out to the shed, two of these are heated, the other two are cold.
I'll have to leave room in the shed for the bookshelves, lounge suite, computer desks, bedroom things...
then when the carpet is dome move every thing back...