I live in an apartment, so does this even work logistically? I’m aware there are some health hazards with resin/3D printing—how serious should my concerns be about that? (That’s why I’m asking here and not in a 3D printing subreddit, where folks might be biased.)
I live in a 2BR where the second BR is used mainly for storage. I have my printer set up in there. You will need a desk / tabletop to put it on, but it doesn't need to take up much space - especially if you find / build a shelf to put the printer on with storage above and below.
I have never done resin printing, but from my understanding the resin is typically bad for you. Like it's the kind of thing you're not supposed to dispose of down the drain. For FDM, it all depends on what material you're using. It is recommended to have ventilation when printing ABS (at the same time, ABS is very sensitive to drafts, which will cause warping and premature detachment from the bed). PLA (the easiest material to work with) is pretty benign. TPU will make your apartment smell like beach balls. Attempting to print materials like Nylon on a printer not designed for those temperatures can release toxic gases by burning the PTFE (Teflon) tube which guides the filament into the hot-end.
I started on a Creality Ender 3 v2 (I still use it, but it is barely recognizable). It is rather basic and required a lot of upgrades over time, but it is easy to flash custom firmware on it and there is an enormous aftermarket of replacement parts and upgrade kits. Personally, customization is what I'm interested in, but you may be interested in something with a bit more functionality built in