You want to bet to make him pay if he has a draw. Allowing him to draw for free is bad regardless of how many hands he might have he can call with. On that board it's also unlikely any card is going to make him more happy with his hand unless he catches the 4th card he needs for a flush.

Bet smaller for sure. If you shove, you probably fold out most draws and win 1000 chips. If you bet smaller you allow club draws to make a mistake and call or shove. Against a hand like Ac3x, you have 70% equity. The only hand we would really want to fold is an unlikely combo draw, but the money is going in whatever you do.