The beach road is probably the best you'll find around here. It's somewhat twisty compared to the rest of the roads. Otherwise, all of the decent driving roads are north of niceville that I've found. There's a small (read really small) stretch of road going between the west gate and east gate of NAS Pensacola, but crossing into Pensacola at the moment from Navarre requires taking 87 to I10 or using the Garcon Point bridge (toll free at the moment) because the Pensacola Bay Bridge was damaged during Hurricane Sally. Traffic across the Garcon Point Bridge is hell starting around 7am until 5pm because of all the traffic.
The only other road in the Navarre area is East Bay Blvd. Connects 87 to 98 through back roads. It's not the curviest, but it's not entirely straight either. It's not always the smoothest either, but I've taken my z4 through there a couple times. If you guys want a long day of driving, take 292 through Pensacola (warrington area) past base and down through Perdido Key. You can hop on the ferry and ride it across Mobile Bay and then drive north through Mobile and through the tunnel back towards Florida. Did this with my Z4 as well without issue. The Ferry had me worried, but cleared the crest without issue. You might want to check your ground clearance on the goblin and compare it to the z4. I don't have my goblin yet, but my 2020 z4 is right around 5in (130mm advertised by bmw)
**Edit** Forgot to mention, coming from Mobile toward Pensacola, after the tunnel you can stop at the "Might A" at Battleship Park. They have planes, memorials, and the USS Alabama that you can tour.