You should leave him at PG, since your current SG has too poor BH/P to play PG. Your opponent is running a zone and although their starting PG is decent, his defense will be coupled with their
dreadful SG. I always believe you should dance with the one that got you there, and refrain from making big changes in big games. You have a very good offensive team, but I think your lack of any true ball handlers will catch up to you in the tournament.
I am also surprised to see your PG and SG combine for only 5 TO's per game with you running the FB and their BH/P.