Technically you don't go for two there if you think your defense is playing well enough to win... you are assuming UF will need a TD and two field goals to tie you.
Disagreed with the call however... especially considering you haven't beaten them in 10 yards. Play aggressive, not to lose... of course their defense is to blame primarily giving up 5 4th down conversions ! Gotta love ol' Jancek and Willie Mart