A few comments about big linemen. The goal is to equate mass to power. This means fast twitch muscle for speed. You need some slow twitch for endurance. Perhaps excess mass is useful for a DT whose job is to not be moved. But a lineman has to move. The reason why Bubba is a 3 star is despite his weight, he has a lot of bad weight. That bad weight is only going to hinder him. I will go out on a limb and say he is at least a couple years away from starting presuming he sticks with it. Smaller more agile defenders obliterate fat linemen presuming they have the endurance to play an entire drive. If the guy can be agile as a 400 pound plus human being and put on more muscle great. The pictures show a butterball ball not a bowling ball.
I am going to give a couple case studies. There was this guy named Greg Skrepenek. When he came to Michigan at 6 7 and 380 odd pounds, we thought we had the worlds greatest tackle. Then UM played Washington in the Rose Bowl. Mr Skrepenek had an awful game thanks to Steve Emtman who made him look slow and weak. Okay, that may be a bit unfair as Emtman was a steroid freak whose body fell apart because he was beyond the pale of reality. Emtman looked like a Sauron Supersolider from the Larry Niven universe. But Skrepenek in order to succeed in the NFL slimmed down to 320. His extra mass just meant he could not handle an athletic DE with speed and power.
Another steroid monster I recall was Tony Mandarich. The incredible bulk was supposed to be the worlds greatest lineman. Yet a 250 pound DE by the name of Mark Messner abused him in college. I remember watching the game and Messner doing whatever he wanted against a guy who was almost 100 pound heavier at the time. I could have told the Packers Mandarich was a fraud. His muscles did not equate to power on the field.
I am being long winded and will paraphrase down for Mr Eight. If bulk does not translate to speed and power, it is useless for an offensive lineman. The guy is on a DivI program. Up to him to have the will to reshape his body. He is going to have to pull, do a reach, or release to the 2nd level to play P5 football. That requires agility. I guarantee you that if Butterball attempted to block Johnny Hodges in space today, he would not find him. Hodges could do a couple loops and than obliterate the individual that was supposed to be protected. Maybe he could stay with Hodges on the first snap of practice. How about the 50th? Not saying he can't do it after a few years of experience.
