Chicken and waffles is not really a Texas thing. I'm sure you can find it down here, but it's not the region's signature food. This time of year, a crawfish boil would be great. Brisket is an excellent option of course. Plus, if you are a beer drinker, there are a ton of great Texas craft brews. The big guys, St. Arnold and Karbach both have huge MS150 teams and can't be missed at La Grange. Smaller ones like Back Pew, Bearded Fox, and Town in City each have teams, but you'd have to hunt around to find them. I'm sure everyone is willing to let folks sample their beverages. I know us at Back Pew in the RV lot will have plenty of frosty beverages. Come find us and ask for me (Scott Preston) and introduce yourself if you want. It would be nice to meet you.
It's my fifth BP MS150 and it's a good ride. Lots of riders and the spectator support is fantastic. Being in the VIP tent, you already have a good group that is friendly and familiar to guide you around and show you a good time. The weather looks great (not gonna jinx it, not gonna jinx it...) so enjoy the ride!
Katy is a popular starting location. I've never started there, but from what I have been told it's very well managed and traffic flows great.