Haha! Thankfully, it's all contained in one room.
If you get a dual stage temp controller, you can do heat and cooling and still use the fridge in the garage for fermentation.
I personally wouldn't use a chest freezer for fermentation. I did that with mine before dedicating it to a keezer and it sucked lifting carboys in and out of it. YMMV, but I kind of got tired of doing it, so a refrigerator works better for me. If you're going to buy a chest freezer, I'd use it as a keezer.
Hmmm I think it is time to go grab a couple 6 gallon carboys and see if the little fridge I have will take 2. If not, I'll have to just lift. I figure it won't be fun but it is not as though I would be doing it daily. You have a great point though.