I think you will be fine! Take a few day drives or trips and how the car behaves. Take a re-built alternator, starter, H2O pump, etc., if you think parts may be a problem. NAPA has these parts, sometimes in stock, but an overnight wait, usually better than the dealer. Hoses and belts you have.
MB Road Service 24hrs. a day, what more can you do to prepare?

Gary, your tires may give you a bigger concern. Their age and condition?
Go, enjoy!!!