No raise preflop with that many limpers. Unless you're willing to go all-in or bet such a large amount that no one else will call.
Postflop, I like betting out there...good job. When somebody comes over the top of you, and then somebody pushes over the top of that.....I'm folding in a heartbeat, or even quicker.
EDIT: Hand two, dump as well....find a better spot.