With scattered victory hexes I won't even try to hold the southern ones. I'd probably have been better off if I'd have set AI tank heavy but I didn't so I expect you're right about the infantry hordes. I'm going to have to keep a third of my StuG's resupplying most of the time.
I'm thinking of putting a fire trench up on the hill in position A, if I can find the right los, I could use them as fall back positions for a forward deployed infantry company and could send my sturmpioniers in to make local counterattacks around them.
I'm hoping the timing on any mass armor advance along the road will be such that the StuGs can support the ATGs, so a temporary halt or immobilization will work fine. I'm hoping some will get stuck in the mud there too. Anyhow, all set up now, crossing fingers
Thanks for the helpful advice and comment!
Brian
PS: here's what the final starting setup looks like