You caught the big "gotcha", that stupid hump where the compressor sits. My first fermentation fridge was the exact right dimensions I needed as listed on Craigslist... until I tried to put a bucket in there and the hump prevented the door from closing. I was able to make it work but it took some disassembly.
I recently got a pretty big chest freezer for $20 (<3 Craigslist) and I absolutely love it. It has enough room for a couple carboys, 3-4 corny kegs and my CO2 tank. It also holds temperature pretty well, so that the controller only kicks it on once or twice an hour at normal fermentation temps. Only downside: it was pretty old and one HEAVY SOB Took a lot of grunting to get it moved in.
I attached a pic; I just cleaned it out so the kegs are disconnected. Bonus cameo by my first all-grain batch in the carboy.