I would like to use my rewards mostly for coach, as I don't mind coach, and would rather have more trips. (I sleep well on planes.)

I fly west coast east coast a fair amount to see family, but usually get cheap 200-300 tixs so don't use miles.

I would like to go to Hawaii more, and also down to Rio, Brazil, or maybe to Europe at some point. I have a significant other, so usually we'd be using two tickets.

I appreciate the advice so far. It sounds like for Hawaii, most people think UA is the best way to get there. And that I shouldn't put miles into CO because they don't have much availabilty of award travel?

American seems to have higher mile requirements for most awards (except Hawaii), but I guess if they are available it beats low mile but not available rewards from CO.