Advice please

Okay so before I say what's going on there's some key things you should know .
I'm about to be 18 in November, my Bf is going to be 19 in December. We both Graduated this year , we've been together 5 months but it feels like 5 years , we're very sure we are going to be married ,  we don't have jobs and we live in Maryland .
By winter 2017 my Bf wants to move to Atlanta together and buy a house or condo , we both live with our parents right now .
My dad re married last year and his wife moved in with him from her moms house 2 years ago and now they're moving to Atlanta together in about 4 months .
I live with my dads ex wife (not my birth mom) as a live in babysitter making $100 a week . 
My dad wants me to move with him to Atlanta , but .... I really don't want to leave my bf . 
And how would  moving out of our parents house into a place together even go ??
Furniture?? Bills ??? Cars ?? We don't even have our licenses yet . 
If I stay in Maryland with my grandma I have to go to college here for something I don't want to do which would push back our moving to Atlanta together plan .
If I goto atl with my dad , I'll goto school there and try to find a place on my own and already be moved down there by time my BF comes.
I just feel like one of us should already be moved out of our parents house , and then try to find a place together.
What to do ??  

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