I think the best scenario is covered in other post you started on 3-10.
1 - Merrillville, Crown Point, Lake Central, Lafayette Jeff
2 - Penn, Chesterton, Valparaiso, Portage
3 - Noblesville, Homestead, Carroll, Warsaw
4 - Westfield, North Central, Carmel, Zionsville
5: HSE/Fishers/LN/LC
6: Pike/BD/Avon/Brownsburg
7: WC/Tech/Southport/Perry Meridian
8: Franklin Central/CG/Columbus North/East