If you are very patient you can brew lagers at room temp, just leave it for a very long time in the secondary. I have done 3 so far, no issues. They also take forever in the bottle.
I may try this recipe when I get some larger pots for all grain brewing, However this time I will lager in my keggerator, using a blanket or similar around my fermenter to help stabilize the temp as the air temp will vary 4 degrees, I am sure the liquid temp will only vary about 1 degree.