It is not hard, and compared to other motors it could be considered easy. The valves are easily located, the intake and exhaust can be identified, and the adjustments with a feeler guage and an open end wrench is just a test of your coordination. You have probably spent more time thinking about it than it will take to complete the process. Of course the dealer doesn't want you to do it... If you read up on it, or have a mech. at the shop show you in a few minutes, you will be off and running!
I don't know how long you trip is, but you might want to consider a TWIN MAX to synch the throttle bodies and a volt meter to keep the juice flowing. Happy travels.