PLO and Mental Game Leak Busting: What I thought I knew, but actually don't

PLO 101: Board Texture

No specific reads or notes on villains per se outside of HUD.

$50.00 USD PL Omaha - Monday, September 10, 11:31:46 ET 2012
Seat 4 is the button
Seat 1: Player1 ( $49.52 USD ) - VPIP: 28, PFR: 16, 3B: 1, AF: 3.5, Hands: 234
Seat 2: Player2 ( $50.00 USD ) - VPIP: 18, PFR: 12, 3B: 5, AF: 5.1, Hands: 561
Seat 3: Player3 ( $58.06 USD ) - VPIP: 48, PFR: 2, 3B: 0, AF: 1.1, Hands: 83
Seat 4: Hero ( $50.25 USD ) - VPIP: 24, PFR: 15, 3B: 4, AF: 3.2
Seat 5: Player5 ( $76.76 USD ) - VPIP: 45, PFR: 16, 3B: 8, AF: 1.1, Hands: 44
Seat 6: Player6 ( $30.91 USD ) - VPIP: 46, PFR: 13, 3B: 22, AF: 4.5, Hands: 39
Player5 posts small blind [$0.25 USD].
Player6 posts big blind [$0.50 USD].
** Dealing down cards **
Dealt to Hero [  4s 8s 6s 7d ]
Player1 raises [$1.33 USD]
Player3 folds
Hero raises [$3.75 USD]
Player5 calls [$3.50 USD]
Player6 folds
Player1 calls [$2.42 USD]
** Dealing Flop ** [ 9c, 5c, 8h ]
Player5 checks
Player1 checks
Hero ?

Preflop: I'm not sure if 3bet is necessarily good preflop. I didn't have any super great reads on UTG (ie: villain folds to cbets in 3b pots), so I think this is likely a spew.
The bigger factor though: 2 players are likely cold calling in blinds.
My hand isn't too strong multiway in terms of flush draw strength...

Flop:
What should hero's action be?
Flop Texture:
2 tone, so lots of flush draws have huge amounts of equity.
2 connected high cards in a row = lots of wraps!

Hero's Hand Strength: Mediocre made straight, no redraw.

The nuts will RARELY be the same by the river.
board pair
flush card
TJQ bring higher straights.

safe cards: 4/3/2/A

I'm pretty sure, hero should NEVER bet here. If safe card comes, then bet turn possibly. Freerolls/bad equity abound.

Actual Result:
1. At least I thought about it!
2. Let's just say, I haven't learned my lesson if I'm bet/calling (bet, call raise).
TBH, Hopefully writing this post will engrave in my head (hopefully soon), as I'm sure I haven't truly learned it if

Mental Game Problems and Realizing I'm not Learning
a. I wasn't 100% focused
b. I shouldn't be 6 tabling (I was actually trying to close out action).
c. I said my thought process out loud, then promptly went against it by bet/calling.