I think it's only possible to go T1 and T2 healing and then stop there with a Jagdpanzer IV. The problem is when fighting soviets, T-34s start coming in at that mark and any more delays are GG.
So the early game, it'll revolve around good use of infantry as no light AFVs will be made. i'm still trying to figure it out myself.
And what if the soviet goes for snipers/maxims with infantry blob into call-ins? You'll bleed way too much MP, but it's very map dependant.