What can you tell me by looking at this map? (Tuxachanie, MS)

I can't tell too much from the map, but it looks like there are lots of streams and probably marshy areas.

–B.G.–

I'm with BG, I would be prepared to have wet feet all day and probably muddy feet all day. There appears to be almost no elevation. I would wear shoes that drain well, very light socks that absorb little water, and maybe carry a little warmth to offset cool, wet feet.
Looking closer at the satellite image, it appears that a lot of it is probably 2-track logging road going through cut and managed forest and there is a bridge over the largest water crossing. This may make it drier than I initially guessed.

… though I'm glad I'm not totally off and missing something.

The Bigfoot Trail in this forest has nice wooden bridges most water crossings and looks like it's maintained by someone on a four wheeler. I am curious to find out how the horse trail interacts too. It should be interesting.

Thanks for having a look.

Mud, mosquitoes, and moccasins, oh my!
Actually you should be a month ahead of the skeeters.

This is a dayhike, right? The only question that brings to my mind is whether you're used to walking 20 miles at a time. I've seen a lot of people plan longer hikes based on having done shorter ones("5 miles was easy, I could do that 3 more times at the same pace"), but 15+ is where I've discovered issues with footwear and stuff a few times that I hadn't recognized before, or just get tired and slow down toward the end.
May not pertain to you, but that's my longwinded way of suggesting you remember to bring a headlamp! :)

btw, thanks for the memories. My family lived down by Ocean Springs for a little while when I was a kid. 35yrs ago, but I've never forgotten the roads through the bayous flooding, and seeing gar swim between the cars on the road while on the bus to school.

I went out a couple weeks ago to Pointe au Chien, an hour or so south of NOLA. The mosquitoes were already out! And I found a lovely snake skin. Gators are still hibernating.

This is intended to be an easy overnight. Lots of piddling around for no good reason.

But the idea of doing the full 27+ miles is also appealing. It would be more of a push that'd test my physical endurance.

This is the complete route:

http://www.mappingsupport.com/p/gmap4.php?&t=t6&q=http://www.weddingscr.com/gpx/de_soto/tuxachanie/track.kml