I think the max you might get away with for a pup tent is a two to three man, of course that means a low dome or pop up as opposed to and outwell carolina s which is technicalliy a three man.
My son is 6'3 and only 15 and will not fit in a two man tent unless I bend him in half. He is in a Gelert Rocky 3 3 man tent with front small living area and I have never been questioned.