Feedback on this Hand

[coderiver]

First HH so be kind...
Home game 40 person tourney NLHE.
Down to 14 players I am second high stack with CL to my right.
I have 5000 chips on the button.
CL ( aka villian ) has 7000.
ave stack is 2000
blinds 100 - 200
I have Ax spades
Villian raises 500
I call.
flop is rags - two spades
villian bets 1000, I raise 2000
turn - rag no pairs or straight draws
villian all in.
I think he is trying to push me off hand
and I think I am playing for the win and am willing to gamble.
I call.
river rag.
villian KK
busto.
How should I have played this - folded preflop?