You need to give all the facts first to get answers!
You don't have the issue of custody settled yet, don't start counting on child support after taking his child away from him to deny visitation and so you can go live with your boy friend hundreds of miles away in OC.
SSI is not Social Security Disability and no, there won't be any child support for you from that and he won't be ordered to pay you child support IF you get custody. And even IF you get custody you will have to allow visitation AND provide the cost of transportation, which is why the issue of where jurisdiction is important and why your move without the courts orders for custody and visitation is still a problem whether or not you like that. You have a few days to get your act together for your next court appearance and you will have to come up with answers to these questions. Understand, there is a chance that he will get custody and you will be paying child support and the cost on transportation for your visitation.
Whine and cry all you want, but that is what happens when you move without the courts orders and the other parent fights you. As said before, you do not call the shots and if you want to go live with your new boyfriend you can but it may affect your custody etc.