Yes, he tries too hard if you ask me. He's certainly a better bet than Vardy. Sterling moves defenders around, Vardy just hasn't got a fucking Scooby unless it's a ball over the top.
I'd bring in Welbeck for Sterling, Loftus Cheek for Alli and Rose for Young. Welbeck is able to play with his back to goal and let Kane stay in the area. Kane was having to come into midfield to get hold of the ball.