OK, i've narrowed it down to 2 options:
1. turn that infantry squad w/ flamer into a second platoon command squad identical to the first platoon command squad. the points will fluctuate a little but as Chumbalaya pointed out, i could always remove the heavy stubbers to compensate. of course, i'd lose that objective-grabbing squad but hey, the enemy can't grab objectives if they're all dead!
2. replace the 2nd Demolisher with: 2nd platoon command squad (no Chimera for them) and add in a 3rd infantry squad with autocannon and grenade launcher. it bumps up the model count at the cost of that tank.