He's 6'3" and he played at 230-235 this year, he has been holding his weight down for wrestling reasons(state runnerup at 225 this year). When he tries to put on weight, he has the frame to put on 30+ lbs of good weight pretty quickly.
He's a violent pass rusher who had his hand on the ground on almost every play so I don't see him playing any LB position, at Iowa anyway. I could see him at DE or as a Mitch King/Karl Klug style quick DT.
I'd that the one thing that really needs to be worked on is better nutrition. I watched him play a bunch this year and he had cramping issues throughout the year. He is playing both ways and punting so it's not totally surprising, but there is clearly room for improvement on the nutrition front.
The good news is that he is an explosive, violent, pass rusher, and the nutrition programs that are now allowed at the college level will be awesome for him. I would absolutely love to see him at Iowa.