I second the Encinitas/Olivenhain idea. Coming from the Midwest, Olivenhain might have more appeal, unless you were quite urban. More land, horses out roaming…
Nothing wrong with Aviara either.
I also think in terms of bang for the buck eastern Encinitas isn’t bad. (east of el camino real, I am west). I might head that way when the kids are a little older and they won’t have to move into new schools. It’s still close enough to the beach that it’s maybe 5 minutes more than what it takes me yet there seems to be a bigger homes relative to the square footage.