Depends a lot on how the soviets are set up, and what (if any) support the Italians are giving you.
I would not take that super-combined. The Germans don't have that many airplanes, and the ships are almost irrelevant, so you're wasting a lot of potential there, compared with just the raw power of pulverizing things on an air impulse or a land impulse.
If the Soviets are really clustered near the border, and have big stacks in the open, an air impulse is probably the way to open things up. Flipped guys, especially that far forward, tend to get out of supply and dead, real fast. The only way to unfit them would be for the Soviets to re-org them with their HQ, which pins their foot down to the line the HQ retreated to. On a long summer turn, that'd be suicide, so they'd probably just let you mop up the guys.
If however, they're further back, you need to advance, and that takes a land action. You should probably be taking Lands as Germany most of the time.
If you have a screen shot of the position, I can give better advice.
So starting with the fast start Barbarossa German setup I decided to hit them with a land impulse using an offensive chit. I was able to push the Russians out of Brest Litovsk pretty easily and managed to get across the river southwest of Dvina at the cost of some disorganized units. If I'd hit them with a combined impulse and an offensive chit I could have flown more ground strikes but I've found that the ground strikes often aren't that effective in non open terrain.
Just learning the game so I'm really at the stage of trying to get to grips with the rules and trying some things out.
Thanks for your suggestions.