One of my best spots is in a thick swamp, the other is just outside of it. Your pics are strikingly similar. I have two permanent stands in this area. One in a high oak tree, which is the one just outside the swamp where the small swamp streams meet the river in some hardwoods, and the other is in a beach tree in a slightly high spot in the swamp. It is in a small patch of woods about twenty yards wide. The wet spots get confined and travel as one small stream through that area since the ground is a bit higher, and that is why there is a tree suitable for a stand. The swamp that I'm in looks a lot like your area since there seems to be a field right next to the swamp area in the aerial photo.
I wanted to hunt in the swamp this year also, but had no real stand. I found a buddy who had some good wood that had been sitting outside and I talked him into letting me have it. Of course I bought new stinky wood and replaced it, but didn't want the new stinky wood in my hunting area.

If I were you I'd go inthere andput some really small stands at the bases of some of those smaller trees, but off of the trails. I'd put them on both sides of the trail (wind direction thing). I'd check the wind direction before getting to the property to decide which stand I was going to and just march in there like a foot soldier with my swamp boots on, but again not on the trail and get on one of those small stands. You can make them real easy and they only need to be two or three feet high to get you above the tall grasses. After all, you know where they're going to be walking if they come in. I'd also get some deer poo from another location and put a big pile of it right where you'd want the deer to stop and take a sniff. Sine you don't have much time to build a really good stand and don't know where you're going to be hunting for sure, being scent free and motionless is absolutely the key on this one. If you only have one shooting lane which may be the case, and that is fine if you only have one trail, there is no reason to be looking around all the time.

I do have a tripod stand. The one I have would sink in a swamp unless you modified it. Not real sure why, but I've never really liked my tripod. I'd go with the multiple small stands. All you need is one piece of lumber nailed to the small tree. Another one big enough for you to stand on parallel to the ground and two gussets at 45 degree angles lag bolted or nailed to the tree and supporting the piece your standing on.
Good luck