Did we have the same surgeon?
I agree with everything you wrote. Can't even add anything, well said! Glad you had it done, it will definitely benefit Bob.
Regarding the heat, even after surgery you need to keep them cool. It's just the breed. Cooling down now should be quicker now, but it won't stop him from over heating in 80 degree weather unless you're gonna keep him in the water.
We drive down to Fl a lot. Blue does fine in 90 degree weather provided he's in the water most of the time. He just can't be out in the sun. And when he does come out of the water, I make sure to keep him in the shade. But even in the shade he can't take the heat for more than a few minutes at a time. They just need to stay cool.