bottle conditioning will take longer at that temp, but given that much time, it should carbonate to the appropriate level. If it doesn't in that time, either give it more time or allow it to warm up a bit after the end of the month.
You could lager it in a carboy if you want, but be sure to rack it off the yeast cake for extended lagering and make sure the carboy is filled to the top to prevent oxidation. If there's not enough beer to top it off, just bottle it because the bottle is a more o2-free environment.
Cheers!
