Thanks so much for the information. Yes, 2 hrs north is almost Oklahoma.
We are about as far north as you can go. I also should clarify, I got a bit ahead of myself and forgot to emphasize that we have never really backpacked. We like to go out and hike from our central location at the campground at the state park where we have our car. We would love to backpack someday, we have just not tackled that. Thanks again for the info. We really need to check out Lake Texoma at some point. I actually was under the impression that the hiking wasn't that great.