Welcome!
It looks like Chester woods costs $5 per vehicle, or $25 per year. I would gladly pay that for a good site, however I'm concerned that it closes at 10pm. Since it doesn't get dark until after 8, that puts a time limit on it. Also I wonder if there are any parking lots without any lights? There would probably be many fewer cars passing by the inner areas.
I was just thinking of going to Keller WMA this evening, but Chester woods might be interesting too. Not sure yet.