That was my point. They're all listing their w/shoes height, or even a little more, even in the NBA. I had to go dig for it, but Michael Finley was only an inch taller than Keldon Johnson (both without shoes). And Finley played when the league was bigger overall.
It would be nice to find a guy 6'8" without shoes, who is as agile as an NBA 2 guard, and has the skills to go with it, but it's not going to happen. A guy like Johnson who is 6'6" with shoes, and has a better than average wingspan and standing reach is probably the physical profile to expect. He carries 217 lbs. easily, and looks like he has room to put on a little more. Finley was only 204 coming out of college, and played at 215 most of his NBA career.
I'm not comparing his game to Finley - just saying that you can't write him off based on size.