This is a tough spot to be in without reads. I suggest atleast getting poker tracker / player view for the poker / tracker / player view numbers if you are going to play without reads.

A few thoughts : He is almost certainly not on a draw, so he either has a king or a set. You should almost never be three betting here, so it's call or fold, and then check raise, check fold or lead the turn big.

This really depends on how this player plays a king. At the $200 stage you don't want to get stacked with one pair while holding a full stack.