You both need high visibility jackets and they have to be accessible ie on the back of the seat (not in a cupboard somewhere. You also need spare bulbs for the lights.
On the mechanical front, make sure your hoses are in good condition, especially top hose. In seven years of taking a 1968 dodge abroad the only thing that ever failed me was hoses. I usually carry a spare coil, rotor arm, a tube of instant gasket,a length of wire (to tie up the exhaust!) and one plug + plug lead.
Have a good time.
Terry