playing one last hand before you go

I was crusing the 10/20 game, but had an appointment, so had to leave.
I had just paid my blinds, and was on the button when the new dealer tapped in. So, this would be my last hand (I don't like to pay time unless I am going to play most of the 1/2 hour).
I was dealt Q5, suited in clubs.
Not a great hand, but I was ahead $500 in less than 2 hours, and catching like crazy, and if you're going to play a speculative hand, the button is the right position.
So I limped after 2 limpers and we took the flop 5 way.
The flop came 5 high with a club and two diamonds. There was bet to me and I raised (top pair, good kicker, backdoor draw, and a very vulnerable hand that might want a free card).
Three of us saw the turn, which was the 6 of clubs, putting 4 parts to a straight on board. Everyone checked to me.
My hand had improved -- picking up a flush draw -- but I felt it likely that one of my opponents had the straight and was looking to check raise, so I took the free card.
The river was a club, and there was a bet to me. I raised, he reluctantly called -- he had made the straight on the turn, and also had two diamonds -- and I took the pot.

This hand plays to a few concepts.
1) when you're running well, play a few more hands. I was catching a lot of flops, but I was winning nice pots because I was 'seeing' the game well. My opponents were a little afraid of me, and I was calling, raising and folding at the right times. Because I was playing good poker, I could play a more speculative hand, knowing I could throw away a second best holding without a thought.
2) be more liberal on the button. position is everything.
3) if you have somewhere to go, be there. it's hard enough to win at poker when you're not distracted.
4) don't count on someone to bet your hand for you. my opponent checked the turn, hoping to check-raise. If he bets, I will call with my club draw, even though I am a 5 to 1 dog to hit [if there is a bet on the turn, I know my pair of 5s is no good, and that hitting a 5 or a queen for two pair or trips won't be likely to win the pot]. But, given the board, and the one-card straight draw, I am happy to get a free card. If you're not positive your opponent will bet, don't try to check-raise. On the turn, my opponent had the best hand, and I was a 5 to 1 dog to make my hand; clearly, I'll call (there was 110 in the pot; if he bets the turn, there would be 130 in the pot, and it would cost me 20 to call, a clear overlay). But, if I miss my draw, I won't give him more action. If I hit my draw, I win. So, betting the best hand on the turn is key.