1/2 Too Loose? Too passive?

[electrical]

Call on Third is marginal unless you know you will have company. If there had been very little folding on Third, then the call could be profitable.

Fourth is probably a fold. Your straight cards are compromised (8,3,4) and you risk a raise behind you.

Fifth, you have a strong hand, and you bet it like you're supposed to. I would be willing to get a lot of chips in the pot here.

Sixth, don't get tricky. Raise. You'll get a call from the original bettor, which puts the same amount of profit in the pot as an overcall, but you don't risk letting the third man catch perfect to beat you. If the third guy cold calls, so much the better. You shouldn't fear a boat here since you didn't get raised on Five, so be willing to go to war with the Aces if you get raised.

The river would probably be played differently if you showed more interest in your hand earlier. I suspect you'd be checked-to, and you'd bet. You can only call if raised though.