You have 8 sure winners and need one more to win your contract.
Play the double finesse in ♠ (75% chance of success), not the single finesse in ♣ (only 50% chance of success).
Keep count of the ♠ and ♦ suits. Opponents hold 6 cards in each. If they split 3-3 you can gain an extra trick with your 4th card in the suit.