ladygradgrad

So i'm wondering about this issue from a legal/moral standpoint and i guess in general. I accepted an offer at program #1 (a 2 year humanities masters program with full funding in my first year and likely funding in my second year) before the april 15th deadline. After april 15th, I received a full funding offer from my first choice program (program #2, the same masters degree, but a 1-year program). I have accepted the offer from program #2, but now that it comes time to contact program #1 to withdraw my enrollment, i am wondering if I can ask to defer program #1 for a year and do it AFTER i finish program #2? I would want to do this because 1)i might want to do a phd down the road and i can polish my language skills and just prepare more in general 2)if i cant find a job right away, it could be a cool thing to do. the fact that program #2 is only a year makes this seem like a possibility. i guess the question is, how committed must i be if ask to defer? is this legally/morally ok if I am straight with program #1 about the situation? has anyone ever done this before?