Cake doesn't allow software and if I had ranges wouldn't that make the correct decision obvious? Does that mean I'm going about this completely wrong by not having more specific ranges than "usually bets when he thinks he has it, usually folds when he doesn't?"

I tend to go by table stats. If the table has say, 20% of players seeing the flop, then I treat everyone there as tight until I see exceptions where players get loose.

If the sizes of pots are small, I consider most players passive and back off when they try to build big pots. My reasoning with this one is that they'll be folding or keeping the pot small most of the time, so why are they building it now? That is, unless a player marks himself as an exception by continuing to be aggressive against me. I figure he can't have the hand he's representing all the time and begin to play back at him.

That is what I've been doing for NL4. Is NL10 really so different that my approach is way off here? I was under the impression it would basically be NL4 with bigger stacks.