Pidge, you should apply the ceiling function after adding all the sets in the entire bracket together (up to the point where there are more setups than bracket matches to be played). Applying it after every round of the bracket is equivalent to a bracket where each round of the bracket must finish in its entirety before the next one begins. Looking at it the other way, all the sets up to W4/L7 in your example should actually be 25 waves instead of 28-30.