As long as you and your fiance have made plans and the two of you trust each other, following your plans and dreams is a natural thing to do. It sounds like your family is also supportive of of this. Of course, anyone including yourself can make speculations about the what ifs in life. It is normal to be cautious about anything in life and especially the big plans. It is also not unusual for many young couples to remain together despite distance and other external factors. How the relationship progresses will depend on the two of you. If you have any doubts, it is best to address them with your fiance as he to probably has things on his mind. Both of your characters and how you deal with stressors and what you truly want out of the relationship will decide the direction in which things are to develop. It is at times better to take chances than to miss opportunities.