Welcome to MuscleChemistry Brutha! Yeah im a taller guy myself at 6'3 and i reached about 320lbs at about 11-13% bf(pretty lean), and it took me about 14 years to go from 250 to 320lbs with lean muscle, so you have your work cut out for ya brutha,lol, your current height and weight is solid at that bf% , you compete or have pictures?
and again welcome brutha!