Marriage Vs School

Hi im 20 yr old and im engaged to be married in july of 2012 i will be 21. My fiance is in the military and i am a student at troy university majoring in nursing.I have an asso. In liberal arts and will have a bachelors in nursing in a year. I really want to marry him we`ve been together for 4yrs. My question is should i marry him while im still in school or wait a year and finish due to him bein in the service. Also am i too young to be thinking this way