Looks a bit small for his size, but you need to set the bike up as near as possible to the video that was posted above. Maybe raise the saddle a bit and flip the stem to lower the bars. At the moment, the brake hoods look higher than the saddle. If he's never ridden a drop-bar bike before, it might take some getting used to. He's a big bloke, so I can't understand why Chain Reaction said he might need a shorter stem.