I think it's a waste 3-betting AA. Dunno why you would 3b K7s and fold A2o-A6o. Cos you're not calling them and they has blockers to more of his range. Rest looks fine.
I'd rather flat KTs most of the time if blinds are passive. You got the right idea: Don't over adjust. If you do start 3-betting 30% and he doesn't adjust you'll level yourself into thinking he did and start calling his 4bets and get stacked by AA. :P
At least that's how I do it.

However if you're comfortable with creating a funny dynamic with some 50NL regs, you can just 3b him all the time. With a bit of luck he'll start 4betting like 25% and then you go back to 3-betting TT+, AQ+ and hope he'll keep it up. I don't recommend that tho :P