In hand 2 Im getting 1:4 pot odds when I complete, and the fact that they limp in and this is 5NL makes me think that they are most likely holding crap (although my A9o is also crap). With this in mind is it stil a mistake to complete here? If so what hands should I be completing in pots where the other players and all limping in?

Also if I believe that I am ahead of the villain should I not be trying to get more value out of this hand?