Thanks all. We are well over MCT - we have 3 hours and 50 minutes in MUC. I figured out I needed to book the Classic fare through lufthansa.com instead of swissair.com, but after seeing the fare difference, I ended up just booking using miles (which I think ended up booking me into a Classic fare). I will cross my fingers for no significant IRROPS that day, and otherwise hope that the United Global Services agents will take care of us in MUC trying to catch a tight connection or rebooking if for some reason we come close to missing our connection.