Hey Soli,
There are a number of options in regards to reformed denominations, some of which would not marginalize or trivialize your call to ministry through the SBC ( this is not to say that the PCA or the OPC woud do this). If you were to be "looking" to switch denominations I would find a demonination that would want to interview you, and take into high regard your previous call to ministry (remember a call is from God, not man) and look at the interview as a way of getting to know you and finding out what your gifts for ministry are. You have already been called and have already served and your are already ordained. Do not commit to a denomination who would want you to esentailly "Start over" because you weren't part of their "denomination" from the start. An ordination is being set apart, not a special ticket that is only valid with the appropriate denominational stamp. I have seen this before, a man has worked hard to accompish what God has called him to, served in a capacity that God has called him to serve in. This individual felt led to a different "denom" and what it boiled down to was, "You're gonna have to get in line like all the other and wait yor turn, we don't care who you are or where you came from we do things our way." This goes to show that the pride of man have an innate ability of scewing things up.
You are already called and ordained, no matter what, don't let anyone tell you that it's just not good enough!
Just my
Blessings