4 br house renting to 4 graduate students

[Mike Savage]

We have been renting a great 4 br 2.5 ba house for 12 years.  Usually our tenants are a couple or a couple w a small child.  Recently a group of 4 graduate students showed interest.  One of the students toured the house with her father and they absolutely loved the place.  Her father will be co-signing on the lease.  I've not thought this rental group through yet but can anyone recommend the best method moving forward?  Should I even rent to roomates?  Any deal breakers?   BTW all 4 of the students will be in school for at least 2 years.  Two of the students will be in school for 3 years.  I usually have a 1 year lease with option to renew after discussion in February.   Appreciate feedback.  Hot summer, brain not thinking clearly.