Bts, welcome to the forum. If you want speed and offshore capability, the Revo 16 is an excellent choice -- fast and smooth in chop. The 13 is a little slower, but turns better (probably not an issue offshore). IMO, loading is about the same for both if length is not an issue for storage. In some ways, a longer boat is easier to load. You can stand on the 13, but not as easily as on the Outback.
It seems like there isn't much surf on the gulf coast unless there is a storm, so launching either shouldn't usually be a problem. Rather than stowing the Drive in the hatch, why don't you leave it in the drivewell? The bungee with a big hook pulls one crank arm back so the fins rest against the hull and pose no problem on launch, and the Drive will be ready to go when you need it. But if you do access the front hatch, the Revo 13's hatch is MUCH easier to get to than the Revo 16's on the water. I'm not sure if the fins will fit inside.
As a minimalist and at your height, I'm surprised you haven't considered the Revo 11. It's quick, maneuverable and easy to transport; nothing like the Outback or Sport -- handles wind and chop better than both. In any event, a test ride should give you some great feedback.
BTW, Turbofins and the large sailing rudder will enhance the performance and handling on whatever boat you choose.
