Pre-flop standard RFI

Flop:

On the flop I was unsure of how to extract value, I was not worried about a set of As because these villains would very likely 3bet pre-flop. CO would often stab at pots if last to act and checked to so I hoped he would bet BB would call and I could consider raising or play it a bit slow by just calling. Sadly he checked behind. Is this a spot where I should cbet nearly 100% of the time?

Turn:

I didn't like the Q on the turn at all. QQ is part of both preflop calling ranges and also the KT, T9 straights get there. I decided to bet as I didn't want to give a free card to a flush draw but I was worried about the set of Qs and the straight but also wanted to get value out of a flush draw. Should I be betting here or and if so should I have bet a smaller amount? And if raised by CO or check raised by BB is this a fold? We are way behind QQ, KT, T9 but way ahead of anything else. Would people raise Ac + club here?

As played I the feeling that I risked the most to win the least. Any advice or pointers would be gladly appreciated.