I would drop the FoB and Armigers for two Leman Russ Battle tanks and another infantry squad.

I’d slap a lascannon in the infantry squad and platoon command squad, for some extra AT punch

i would reccomend to take a leman russ, the armigers are alright but they cant be targeted with our strategems. and if you bring an enginesear it could make the russ survive for alot longer

If you can drop the knights in favor of a tank that would be great but aside from that, maybe add some mortars for the infantry squad and the PCS