I wanted to say what daven said. This isn't new, but it's correct and the fact that you think about the game and arrive at these conclusions is a good thing.

Edited to add:
Note that while a set of 3's beat your 2's your 2's still beat someone with AK who hit two pair on an AK2 flop. A set of 2's may be weaker than a set of 3's - but it's not outright weak. It's still three of a kind.

Stack sizes is a good point. In my table/seat selection these days I go for stack size first - preferred no stack shorter than 80bb - then vpip for looseness - then average pot size for juicyness. Table statistics are to an extent based on the hands dealt, so an average pot may not be indicative at all. At least a table with deep stacks can DEVELOP into a juicy game. A table with shallow stacks cannot.