[Cheetara]

I regret this, everytime I see my daughters name in print. I know thats probably really mean to say, but her father and I just don't get along, probably never will.
We co-parent well enough, but there are always little blow-ups. And someday (sooner rather than later hopefully) I'd like to have my daughter's last name changed to that of her stepfather's last name. Or if not his, than at least mine. He's been her stepfather for almost seven years (my daughters eight and a half) and they are very close. She even calls him daddy.
But I know if I tried getting her last name changed my ex would just throw a huge fit.
If I am going to get my daughters name changed, shouldn't I do it as soon as possible. I figure the older she is, the more complicated it would be, like more records to change and paperwork to fill out right?

Is there any way my ex would be able to stop me? I am the custodial parent, though we have joint custody.