Here's my advice: Whatever amount of time you've allocated, double it. That takes the pressure off having to be somewhere at an appointed time, except for the wedding. Which means you probably need to take a week or so off in advance of the wedding to make sure you get there in time. Bottom line here is that the truck will be fine if you don't stress it too much, and you will do much better if you are relaxed. I took a leisurely trip from LA to OKC last year through the California desert and had to make myself slow down-even picked the most obscure roads and goat paths, to enjoy the scenery. It was very pleasureable, the truck made it fine, and when I got home I was in pretty good spirits. Hope you have the same experience.