Marines

My boyfriend is wanting to go into the marines....I am 19 and he is 25 we have been together for a year and a half

He has a plan for our relationship but I’m wondering if it is realistic and possible with everything going on..

He said before he leaves for training he wants us to get engaged then when he is gone for that he wants me to move out of my families house and stay in his apartment then when he gets back he wants to get married so if he ever has to leave I can go with him.

Right now I work as part time $9 an hour and I am a full time student (17hours) for EMT

I need advice on if this is a good idea. I am so anxious about him joining the marines and my school. I want to get engaged and marry him and I’m ready but is this too much at this moment ? So much stuff is happening. Is it Unrealistic? Or can it be possible.. I’m just afraid this plan isn’t gonna work out because of so much stuff at one time