I would tend to agree with what Pilgrim has written, though I have mixed emotions regarding your question. If you wish to be a Southern Baptist minister, you really have little choice, it seems to me, but to undergo rebaptism. That is simply because baptism by immersion is indeed the doctrine of that church, and if you wish ordination therein, I don't see how you can say you are in accordance with the doctrines of the SBC.

Nevertheless, rebaptism has since the days of the Early Church Fathers tended to meet with the disapproval of the Church, and it seems to me that an absolute insistence on rebaptism by immersion unchurches (at least in a sense) all other communions that do not use immersion as their primary or only mode of baptism.

Theo