All you can do is ask yourself what maint would be due in that distance. How many problems have you had in the last 3200 miles. Too many bullet proof claims not to go. What was your mechanics report to you last time he had it?
Worse case senario, you rent a car somewhere in BFE, finish the trip and have the car shipped home on a carrier
Seriously, just don't beat the snot out of it the whole trip, and you should be fine.