I agree with people who say that you can wait. Sounds that you've a lot on your plate even otherwise now so probably you could focus on these other things now and get accustomed to 'adult life' a bit before doing that kind of commitment. What I've experienced, you usually change or at least grow up a bit during that kind of big life changes like moving out of home. So (even sure this is personal situation for everyone) maybe it's good to wait for a while and 'settle down' in your new life at first and let him to do his active serve in military first, too. And reading your message, sounds that you want to wait at that point, am I right?
The chance to marriage won't disappear and you can go for it when you're both ready
. You can always tell those who are asking it that you'll take this step when you're both ready but want to wait just now for a while.