KQo

1. I prefer 3b. You have blockers.
2. I may xr flop.
3. 35%.

Preflop: It is up to you really what you prefer. Playing OOP postflop with this hand is hard, so you have to be careful if the pot gets big because of domination.

Flop: You aren't folding. Then it depends on your ranges. If you have QT(s), T8s and 87s here, then check-raising with KQ is maybe overdoing it if you build bluff ranges from below.

River: Small bet. You can also throw in a slightly bigger than pot bet because it looks very much like a bluff to some. If you get called just 33% of the times you would have gotten called for a 1/3 pot bet, then it is more profitable. But this is more of exploitation versus known players.

I like 3betting more but calling is not bad. OTR I would bet small ( around 1/3 pot ).

1. I like defending wider on BB. This is quite the exception here
2. For sure
3. 30-40%

When ever I consider a 3bet I always look up for stats Fold vs 3bet. With this kind of hand I would rather see him folding my 3bet alot of the time, meaning if he has more then 80% Ft3bet I would consider a 3bet. KQ is not a hand that I prefer to play in an inflated pot out of position, while you can easily play another 1,2BB and see the flop and play it from there. Besides I would almost always just call from BB, and consider a 3bet from SB.

Flop - call, would consider CR if I had a backdoor FD