Long distance reationship and marriage?

Me and my gf met in(california) undergrad and dated off and on for about 1yr. She got into med school after graduation but had to move all the way to chicago. Naturally I was happy for her but her moving away was going to be hard on both of us. We have been in an LDR for 3 yrs now and she has 2 more yrs left in school. We both really love each other and get along well but for us to be together one of us needs to relocate. Obviously she can't leave chicago and I don't expect her too. I am currently living in california still and am coaching football and wrestling at a very good high school and also work at an all boys group home at night. She wants me to move out there but I want to stay in california and continue to gain expereience since I got to work in a very good sports program and I plan on going back to school to get a masters degree this year if all works out. My question is this; is it unreasonable or unrealistic to wait another 2yrs until she graduates med school before I relocate? She has to do a residency program for another 4 yrs after med school and dosnt know where she will be so im kinda waiting until know where she will be before I move from california, my home state to be with her and get married.. Is staying her another 2 yrs a selfish move on my part? She has been dropping hints for a while about me movin there since "I'm not really doing anything there that I couldn't do in chicago".. I'm 25 and she is 23... I really would like to know other ppls opinion or advise from those in my situation. I love her and want to be with her but at the same time I'm in a great spot to gain great experience in sports which I have been apart of my whole life...