Too weak for Barbarossa?

[GAGA Extrem]

120 INF
9 MTN/PARA
8 HQ
12 ARM
1 MECH
9 MOT
6 CAV

1) Amount of INF is good. All brigaded, I suppose?
2) ARM is a bit small, but can be enough with good support, in general you should aim for ~24 DIVs for Barbarossa (imo).
3) Way too many HQ - 3, 4 at most, are sufficent.
4) Continue building more MECH during your operation.
5) Your airforce looks good and is the key (a necessary key considered your numbers) to win the war.

 

[GAGA Extrem]

The main problem with HQ is their cost.

Yes, they are useful - and you should at least have one, better two-three and place them at hot-spots. But a single HQ does cost more than a brigaded ARM division, which is often much more useful than an HQ...