Friend and I are really confused about this hand. Really cant figure it out what the best line is.

$50.00 USD PL Omaha - Wednesday, May 21, 10:14:45 ET 2014

Seat 3 is the button

Seat 1: Player1 ( $46.17 USD ) - VPIP: 95, PFR: 64, 3B: 25, AF: 1.0, Hands: 55

Seat 2: Player2 ( $59.18 USD ) - VPIP: 34, PFR: 16, 3B: 9, AF: 2.2, Hands: 161

Seat 3: Hero ( $57.15 USD ) - VPIP: 32, PFR: 19, 3B: 5, AF: 2.5, Hands: 31711

Seat 4: Player4 ( $25.75 USD ) - VPIP: 34, PFR: 11, 3B: 6, AF: 2.1, Hands: 1288

Seat 5: Player5 ( $55.28 USD ) - VPIP: 56, PFR: 31, 3B: 11, AF: 3.3, Hands: 124

Seat 6: Player6 ( $29.50 USD ) - VPIP: 32, PFR: 10, 3B: 5, AF: 1.3, Hands: 264

Player4 posts small blind [$0.25 USD].

Player5 posts big blind [$0.50 USD].

Dealt to Hero [9s Qh 7c Kc]

Player6 folds

Player1 raises [$1.25 USD]

Player2 calls [$1.25 USD]

Hero calls [$1.25 USD]

Player4 calls [$1.00 USD]

Player5 folds

** Dealing Flop ** [8c, Jd, 6c]

Player4 checks

Player1 bets [$3.66 USD]

Player2 folds

Hero calls [$3.66 USD]

Player4 raises [$20.14 USD]

Player1 calls [$16.48 USD]

Hero ???

Fold: is the most easiest option, we have only 7 outs to the nuts. 

Call: we keep lower FD in the hand, we can evaluate on the turn vs player1.

Raise: Big change player4 has a made hand, JJxx 88xx, got history with him and he plays really straightforward. 

What to do?