Moving from my TN. dream house back to Fl. has been on my mind but the bad economy dominates my decision along with the status of 3 modular layouts. "O" wont fit in a Fl. 3 car garage and cant be re-worked. I guess someday "Everything must go" ???
Obviously I don't know your situation or what you want out of a layout, but people have built o gauge layouts in garages using a variety of methods , including suspending them from the ceiling, or fold up, to allow using the garage and having a layout (and I realize that has other challenges, garages generally not being climate controlled being one). Not in the least bit criticizing (given my own, shall we say, torturous path to having a layout), but rather encouraging you there may be ways to get joy out of it. As far as things like the economy, I more than understand (I think anyone who isn't independently wealthy is concerned at this point), and the cost of materials isn't cheap, etc. I have my own unique economic and other worries, and one thing I have figured out over the years is that there are always reasons not to do something, in a lot of ways it can always 'never be the right time'.
Not saying spend like a fool of if someone is facing really tough times potentially, just saying that it is easy to find things to be worried about and not doing anything even in relatively "good times". Nice part about trains is there is always something you can be doing, even if it is just planning how to build a layout when the time is right. If your current layout can't be reworked, could you do another one to fit into the space you will have? Given I assume you already have equipment, couldn't it be reused in a new layout, so you minimize what you have to buy?
Again, offering that as encouragement