Between 5'8" and 6'1". Shorter than that and you will be dwarfed by bigger guys, taller than that and it will take too long time and be too difficult to fill out your frame.
Dexter doesn't have calves and his quads and halmstrings are meh.
Lee priest has a small chest and is back is lacking.
Shawn Ray is flawless and doesn't have a single weak muscle group.