I feed live because my snake won't take f/t. I also don't store them, I live 2 minutes away from a store so I get them on a weekly basis.
So, if your snake is currently taking f/t no problem, there is very little in terms of "clear benefits" to switching to live other than the fact that (I believe... could be wrong) there is (slight) loss of nutritional value when feeding f/t.
With 1 snake, and no feeding issues, your probably best to just stick with f/t.