I see both sides of this. As I said before, a 600 lathe that is still working won't be worth less than 600 if you keep it maintained. The wisest notion is to buy as big as you can afford,or even bigger,but you can't put a a 16" lathe in an apartment.
A recent experience: my wife and I were looking for a piano upgrade. We looked at pianos over a wide range of prices, including quite expensive ones. Many of them were concert quality and very touchy. Th last place we went, she was playing this very modestly priced offbrand piano that I had to extract her to go home. Of course we bought it. Moral? buy the lathe that you will use. This includes all your circumstances.
Consider renting a heated garage instead of a storage locker. There's a lot more flexibility and a lot of experience here in the forum on renting garages for machining, etc. (And you have room for a bigger lathe)