I agree with Stacks. flat with small-mid pairs OOP, if you get lucky and flop a set, hooray! If you get lucky and there are no overcards on the board, hooray! otherwise you're just looking to play what could be a large pot without the best, or the best position. recipe for disaster.

On the other hand, if this villain has been raising every hand on the button for the last 6 orbits. maybe you want to tell him to lay off and stop pinching your blinds, in that case ok, pocket 9s are fine to make a stand with.

Also I don't like the 'bet pot' which you do on every street. without a big hand out of position you want to try keep the pot small, I'd say C-bet for just over the ammouny you raised him, Cbet for 20c here i'd say. If you really feel like betting again on the turn go for maybe 50c now, still a large bet compared to what you bet on the flop, but you have managed to keep the pot a lot smaller than just 'bet pot'ing the whole way.