All of the above. We are no more unified on the subject than most Presbyterians.
I tend to be a pessimistic postmil

(as in the view presented by Iain Murray in
The Puritan Hope with an over-the-shoulder casual dread that maybe the millennium is already over), my pastor is an unmovable amil. I know several who are historic premil. Of course, those are all current views, but I don't think there was any consistent view historically. We didn't even use the term "Reformed Baptist" until fairly recently. And everyone claims Spurgeon as holding to whatever view they have.