6'1" maybe 6'2"
I don't get dudes who just want to be freakishly tall, cant find clothes, cant fit in cars or ride roller coasters, bump your head on , stick out in a crowd in a bad way.
The way I see it is this, in a hero story, the hero is never a giant, the giant is just an obstacle for the slightly above average sized hero character to defeat and continue on his way. You see this trope over and over in film and TV, main character action hero guy is 5'10" - 6'2" , dramatic swell of music as the big bad sends out his 6'6" - 7'2" goon thug, they fight for a bit then the main character ultimately triumphs. The main character is well rounded, strong, fast, handsome, sexy, a good lover, a skilled renaissance man. The giant goon is just a one dimensional thug, and nobody is ever rooting for him. Obviously this is not how it is in real life, but the perception is still the same, at 6'2" you're james bond, at 7'2" you're just a freak novelty