While the trails on the GOX run are difficult (rated 7-8 out of 10), they can all be done without breaking anything with proper driving skills. I've done all of the trails at least 5 times, and have never had any problems.

Being stinky for 7 days is one of my concerns, and I hope to get some sponsorship for the trip to enable us to bring a hot water shower since we'll be camping near lakes and rivers each night.