I love the river card, I move all in here. At this level the Ace of spades will call you 100% of the time.
Consider your holding in relation to the board, every spade between 8-king is in play, someone with 7 of spades or lower will not call any bet here, + they would not be in the pot at this point.

Only hand capable of calling is the ace of spades, and if someone has it you must take their entire stack, all in is the only play on the river here.