Lejeune is over run with deer, you will do just fine. The heat and humidity? Lived here all my days and still not really used to it. Where I hunt (Pollocksville area north if you) when the heat is on no need to get to your stand more than an hour before dark, nor sit more than 2 hours after daylight.
If you can find some sort of bottom, one that is nice and shady, the deer will be bedded up in there.
Seed ticks will also be an issue, I wear knee high rubber boots with trousers tucked. Sprayed with a repellant.
Mid October, early nov. Things will change for the better! Cooler weather and all.
Shoot straight,
J