Possible, sure, but I don't think they are very reasonable expectations. It's not like he's really been forcing 3s so far in his career, around 2 per game. I don't think he'll get any plays to free him up at the arc, I guess most of his attempts will come off a drive from Boat or Bazz.
High 80's again is possible, but he hasn't gotten past 80% in either of his last two seasons, and you typically don't see much improvement on FTs throughout college careers for people already shooting at a decent clip. It's the guys who suck at it who work hard on it in the offseason. There are probably fewer than a dozen guys any given year who shoot 90% on a season averaging more than a handful FT attempts a game.