The way the bracket looks, whoever wins out of our district will get Harrisonville at home. I'm not 100% sure, but I do believe that is accurate.
If WP wins, they host next week.
If WC wins they would host Hville (because both would have hosted equal games and WC is on the top of that bracket) or go to Center (because center would have hosted fewer games).
Looking past that, if WC were to win tonight, it will be their last home game if Center were to beat Hville tonight. If Hville beats Center tonight, next week will be WC's last home game. No matter what the other outcomes are, there is no scenario that I see where WC could host a semifinal and I have ran it to ground with Vashon (3 seed) at Affton (1 seed) and Farmington (4 seed) at Cape (3 seed) possibilities.
The first factor is whoever has hosted the least gets to host.
Including tonight's games, WC has hosted 3, Affton 3, Cape 2, Farmington 1 and Vashon 1.
So just looking at Afton since they have the max of 3 hosts like WC, if they win, they will have to go to the Farmington vs Cape winner. If WC went to Center and were to win, both WC and Affton would have 3 hosts, neither would have hosted the quarterfinal and since Afton is in the top bracket, WC would go there. Obviously, with the other 3 schools having fewer hosts, if one of them were to prevail over Affton out of those two districts, WC would go there.
All conjecture. I am definitely not taking anything for granted or making any predictions here.