What are my rights as far as how far my child can live from me if I am paying court ordered child support?

The mother moved back into her parents house out of state to get her finances in order over a year ago, I agreed to that, but she was supposed to move back to the area once stable. I have been paying monthly support as agreed. Some of her mail still comes to my place(and two bills), but since we're not getting back together she decided to rent a place around her parents as of a week ago, and I have a feeling she is going to take me to court to get more money to be able to afford it. I've been wanting my daughter closer to me, it's hard for me to travel due to my job and expensive. Also, she hasn't let me watch my child on my own in my own state. I also am interested in attempting full-custody. My child's mother has been irresponsible with my child on several occasions, and is destructive