Congratulations on the two new admits!
In terms of UCF, I would check out this counselor’s guide (especially the spread on p. 12-13) to get a sense of what kind of stats accepted students have at the Florida publics. Although your son’s stats might be below the typical ones for a fall semester start, they would be on the higher end for students who apply for a summer start. So if UCF is of real interest, he could get the 9 hours out of the way over the summer before freshman year and would significantly improve his odds for admission.
ETA: Did not mean to reply to @tsbna44, meant to reply to the thread generally.