This has happened a several times recently and I wanted to get your thoughts.

Loose $25 NL table.
50-60% see flop %, passive table.

Hand 1.
I am in late position with 54s. Everyone limps as do I. 8-10 people see the flop. Flop brings a flush draw in my suit but is otherwise all low cards (without giving me a straight draw). Someone EP throws out 1bb and everyone calls. I figure I have mother loving pot equity so I raise it up to pot or 2/3 pot…$1-$1.50. Everyone calls. Sweet, look at that pot build. Turn is a card, no flush. It is checked to me and I throw out the same pot building bet $1-$1.50. River completes the flush and someone in EP comes out firing a ¼ to ½ pot bet. I may be overflushed but I figure it is worth a call. He shows his Axs and takes it down.

Hand 2, same situation.
I am in late position with 7s6s. Everyone limps as do I. 8-10 people see the flop. Flop brings 5s8sKc. Sweet jesus. I have an OESD straight flush draw. Someone EP throws out 1bb and everyone calls. I figure I have mother loving pot equity so I raise it up to pot or 2/3 pot…$1-$1.50. Everyone calls. Turn is a card, no flush. It is checked to me and I throw out the same pot building bet $1-$1.50. River completes the flush with As and someone in EP comes out firing a ¼ to ½ pot bet. I may be overflushed but I figure it is worth a call. He shows his Kxs and takes it down.

I am not crystal clear on the river action here [either hand]. With a flush I may have raised it up and gotten callers as I figure any flush is decently strong. Reguardless, my question is about how I handled these situations. I figure I have two ways I can play it, build the pot and hope there is no higher flush or get aggressive and try and take down the pot with aggression. If I get aggressive I stand to lose a bunch from Axs or Kxs because I don’t think I can push them out with my aggression. Do you agree with my pot building play here or would you get aggressive with it?

On the second hand, I do think I could have gotten aggressive with it. If that straight flush completes I am taking Axs or Kxs for his stack.

Finally, assuming I hold bottom suited cards like 53s (lowest I play), what are the odds of one of the 9 ring players holding two same suited cards when a flush draw (my/our suit) flops?