Always aim to be realistic.
Talk to her regarding this concern to get her input into it too, where both of you can voice your opinions.
Take into consideration freshers, social life, events, distance etc. There are going to be plenty of (more convenient ) options to consider. If you just met each other it will be more easier to cut her off, etc.
You both would have to successfully agree and be honest on if you’re actually that serious about each other.