It depends on your school. For me, each rotation allows you two excused days for interviews. So if that's an issue its hard to interview and not miss work. That is unless you plan on spending a fortune on airlines tickets for very specific times. To save money, you'll inevitably end up with a lay over or extra travel day here and there. Granted more vacation would be nice, but most schools offer an anatomy elective. That would work for one month, then take Jan. off.