How would you play this hand in hero's shoes?

PokerStars Zoom, Omaha Pot Limit - $0.50/$1.00 - 5 players
UTG: $34.11 (34 bb)
CO: $171.44 (171 bb)
BU: $63.37 (63 bb)
SB: $177.28 (177 bb)
BB (Hero): $293.85 (294 bb)

Pre-Flop: ($1.50) Hero is BB with A♦ Q♦ A♠ Q♣
UTG raises to $3, CO calls $3, BTN calls $3, SB calls $2.50, Hero 3-bets to $18, 1 fold, CO calls $15, BTN calls $15, SB calls $15

Flop: ($75) T♥ J♣ 2♣ (4 players)
SB checks, Hero ???

I was thinking $21 c-bet to put CO and SB under pressure, considering BTN will shove very frequently. Plus we have great blockers of our opponent's continuing range. What do you think?