If I was in your shoes I would wait until you are finished with school, then get commissioned whether it was Reserve/Guard/Active Duty. The Air Force will always be around, time dedicated to finishing your education may not. (Life happens after all.) If you were to enlist as other posters have said, you'll have to contend with basic training (a joke), technical school, and finally OJT when you get back to your unit. Add deployments into the mix once you are fully qualified in your AFSC. Realize, that you'll have to make up about a year and half (worst case) of time you could have used to finish your degree. However, it's not impossible to do though, if you are determined to finish your degree. Additionally, it's not as simple as being awarded a UPT slot once you finish your degree. If you can get a slot as an officer once you have finished school, you'll have to go through OTS first to earn your commission then go to UPT. Talk long with your family, friends, and finally your recruiter before you finally decide what you want to do. All the best