I'd recommend a fish, minimal, egg, or other wide nose and tail designs, with a confortable volume and width, or a not too extreme mini-simmons (more than 6'6"). Try to have some rocker, not too flat, for tolerance to mistakes. Or the "big guy" model of many brands.
As a SUPer, you will have a lot of power in your turns, much more than a normal prone surfer has at your surfing level, so you will have no problems handling wide tailed boards, but they will be immensely fun to ride.
In traditional designs, I had once a McTavish "Carver" in 7'2" that was a total blast:
The 2 set of front boxes were to move the front fins forward in small waves, a nice feature.
An exemple of a good minimal design (my yellow board: 7'2", with a pulled in tail to handle power)