The Monarch is a pretty good shape. Its very poppy and feels good on the water. IMO it lands a little hard but not terrible. It has pretty deep molded fins and unless you have issues controlling your edges, a center fin will not be needed.
There are dozens of shapes that would work and until you ride a ton a figure out what you like, the Monarch will be a good start. It was a board ahead of its time when it was first released.