He will be a great addition to the team. He can learn under Troy Williams and Brandon Cox (both SR next year) and Tyler Huntley (SO next year), and hone his craft for a while. He should be a tremendous QB for 2018/2019 and beyond, and will be more like 6′, 205# by then.
FWIW, this is two years in a row that we beat out some very good to get a QB recruit. Whomever recruits Texas did a great job with Jason Shelley.