One thing I'd add is that you should not use a wheeled cv or command infantry in a wheeled transport with a tracked opener. I've seen them get destroyed (wheeled cv) when they outrun the infantry in tracked transports here on RU-vid.
Maybe it's a bit out of the scope of this guide, but AA micro was quite bad. If he stopped the I-Hawks, they would've most likely shot down your bomber. It's not like it would stop you from winning, though.
There are certainly more things to touch on, and perhaps I should make another soon! It's an odd thing, since my own game has changed significantly since this guide. The way I figure, I don't have the expertise to tell people what the BEST way is, I can only tell them the beginner mistakes I also used to make!