I'd go for it with minimal concerns. If the fridge proves not to work well or the compartment is getting too warm, then you can fiddle with the installation and ventilation. For beer and other beverages, it's not like you're going to have spoilage if the fridge fails to cool well, just unappetizing drinks that force you to get some ice for your glass.
(If you aren't on a particular schedule to get this done, you can often pick up used little fridges for not much money from around college campuses at the end of the school year.)
