This is actually my plan too...need the money from 2L summer to buy her a ring. Obviously, I don't have personal experience, but my best friend is getting married in a few weeks. His fiancee is in vet school and has been planning the wedding all year. From what she's told me, it seems like vet school is more of a time committment than law school and it sounds like she has still been doing fine, so I'm guessing you will too. I'm sure it'll cut into a bit of your leisure time, but it can be done.