I'd think it depends on where the Germans place their priorities. Striking a decisive blow against the French may seem like the more important move. If the Dutch appear really weak there might be a intern offensive to 'clean up' this Allied position, but the French seem more important.
Both the Germans and the French are in trouble in the air. The French did not get their aircraft production reorganized and rolling until spring. neither did the deliveries from the US start until early spring. In the autumn the German AF was not recovered from the loss of 500+ aircraft in the Polish campaign. OTL they lost approx 1000 in the 1940 campaign. Losing even half that in the autumn of 1939 leaves the Luftwaffe thin in the air. & they don't have a allied air force as the French had with Britain. Even a couple hundred new Hurricanes make a difference at moments like this.
Then theres questions of tank production between the two, AT gun production, and the big one - artillery ammunition.