Have Fun!
I went on a hunt in the not too far from where you mentioned and with the same guide service.
Make sure whatever sights you use you can see easily in low light. I used a Trijicon scope (5 to 20 X with mildot and a very finely softly illuminated dot at the crosshairs), made the night time a lot easier to work with. A couple of friends on the same hunt had difficulty seeing their crosshairs on their scopes (one 3 - 10 X rifle scope with large dot, but fine crosshairs, one 4 power pistol scope and one 6.5-20 rifle scope with varmint reticle) during the low light conditions. (We were hunting red-lighted bait piles from 40 to 110 yards away.)
I also had another scope with me in the blind, a red-dot type sight on another gun. The dot was alright, but it was brighter and larger than I wanted (at night), Just take some time before your hunt to look through some of your scopes at night and see if you can put your crosshairs on dark targets.
Going to Texas in early April, climate is quite a bit different from Wisconsin. Be ready for temps anywhere from 40's (not as likely as 50's to 80's) to 90's or so.
Here is a link to a site with quite a bit of hog information on it.
http://www.texasboars.com , check out the anatomy of a wild boar page, he dissects a boar to show where the heart, lung, and vitals are. (a bit further forward than many would first guess)
Oh, and be on the ready for hornets (hope you don't have any in your blind)
Good luck!