Population control is a cop-out! If that's all there is to it, I can let others handle that. Don't bend your ethical line by using such justifications.
As far as each particular situation, it is up to YOU! If you feel comfortable with the size of the place and the fact that the game has a fair chance of eluding you, go ahead. IT'S NOT ABOUT WHAT OTHERS THINK! It's what YOU think.
Personally, I doubt anyone will "condemn" you for huntin' a place like that anyway. As others said, it's not like it's 250 acres and stocked to sell hunts.