Understanding that I am a "rookie" I would choose open area 1, even though it is lower, the water is always in the bottoms LOL. if they are roosting over water, it might be easier to get them in that area than other areas first thing in the morning. And with a little luck they could fly down in that area. From what I've learned they prefer to fly down in open areas and looking away from the sun. I think the trick would be to get into a shaded area looking south(providing up is north on your map).
Again take it for what it's worth, the info I have is from reading and from observation of years of sitting in a tree stand bow hunting deer, not turkey.
Good luck and let us know what happens