1. I'm new to double deck blackjack and wanted to get advise on my betting spread. A 10x bet spread shouldn't be too aggressive, should it? (percentages in chart below are rounded)

REKO Betting Schedule.jpg

2. In Modern Blackjack, it mentions in the basic strategy section that there are a few strategy changes in double deck that are not in six deck.
a. 9 v 2 double down
b. 11 v A double down
c. A,3 v 4 double down
But if I am counting, should I disregard the above basic strategy changes? Should I just use the shoe-strategy for 9 v 2 and 11 v A (hit if below index and DD at index)? Or do I always double down these two hands in 2 deck blackjack games? Lastly, do I always DD on A,3 v 4?

Thank you.