1) Given the stack size why not just push the flop, or atleast push the turn? I really dont like leaving myself or an opponent with a stack that is tiny in comparison to the pot because if a scare card hits it going to be harder to get away from the hand. Also, since it is such a small stack in comparison to the pot, that makes it easier to get the money in early. I guess I personally just dont see why we arent trying to get our stacks in on the flop when you even said he'd probably call.

2) This is fine

3) OOP in a 4way pot on a very coordinated board Im not sure I like this bet without some idea of the types of players in this hand. If Im against some loose passive players, which is very likely, then I dont mind this play. My point here is that this is really player dependent and while against some players this is considered value betting, against others you are hanging yourself. If I do bet this board though, Im going to be potting it to help protect against draws in a multiwaypot.

4) Preflop Im raising even in fullring [although I havent played it in awhile], but limping is ok as long as you do this with hands other than small PPs. In a 6way pot if I hit the board Im potting it, regardless of how wet or dry it is simply because I will get more value from the hand that way. Since this flop is monotone, thats even more reason to pot it. I dont think there is anything wrong with the turn, but a more aggressive player may see your check [rightly so] as being scared of the 4th diamond and try to take it away from you and I dont know how much you can really call and expect to get paid off with if you hit a boat. I dont think its horrible by any means though. On the river I think Im betting less given how the hand has played out. If my standard bet was a PSB and the action had gone "Pot-Pot-Pot" then this is fine, but you need to make bets this size with weaker hands as well.