Your gunner math continues to suffer. Don't get overly impressed by glossy brochure advertising that fails to account for the 24/7 care and feeding required by all these modern systems.
Why do you want to free up people for the CQB when most of the killing takes place well forward of CQB range? Do you think that little of your infantry that you want them to bear the brunt of the burden? Or are you once again wanting to equip every rifleman with a 20 km nuclear slingshot?
Honestly, if you sit back and think about it, the Canadian army could put a pause on infantry growth while it builds up all the CS and CSS folks necessary to give proper support to the CQB folks we already have. After that we can build them up apace.
You are right about one thing; we will need much more, very expensive air defence kit and people than our CQB-centric military will admit. - Oh! and long range ground-based strategic strike kit. The Ukrainians have it right. Being purely defensive is for losers. You need to be able to hurt the enemy seriously in its homeland.