Hi konatom and welcome to the forum. Fortunately the Hobies don't shrink too much in the water so if it fit you on land, that's a good sign. Sorry, I'm not your height and don't have a Sport, but I do have a taller friend with one and have enjoyed using one myself.
You're pretty tall for a Sport, but the fit depends more on your weight and inseam than overall height. There are at least three things you can do to get more leg length.
1. First, make sure the pedals are adjusted all the way forward to the #7 position. Some folks don't realize that the pedals are adjustable.
Also, make sure your seat pegs are mounted in the rear set of holes.
2. Your footwear should be thin like aqua shoes, rather than thick sandals. That can make up to an inch difference.
3. There is an older style of seat that is thinner and lacks the lumbar support cushion. It sits you a little further back and lower giving you at least 1/2 inch additional leg space (on right, below). I find it quite comfortable and use it exclusively. You may be able to find one or make a trade if necessary.
4. Your foot position on the pedal is important regarding leg length. Make sure you have the straps opened up to allow the ball of your foot over the pedal.
The Sport is a great little boat, but if you still feel cramped, the Classic weighs about the same but has a longer cockpit (and is 3 feet longer overall). Although they're no longer made, there are a number of them around. Disadvantages -- the cockpit doesn't adapt well to fishing attachments, limited storage space and no provision for a sail:
Another alternative might be to move up to a Revolution with a trailer (or pick-up bed). With practice and a cart, you can roll it right up and just shove it on. On the other end, you just roll it right into the water and then pull the wheels (yes, they float).
No matter what you decide, make sure you try it before you buy it!
