I must be different....I would just go. No planning, no filling the car with parts, just go. If it's running good why all the "what if" stuff? I drove a 1967 Camaro, 350 horse 350 and a M-21 with no first gear from Maine to California and shipped it to Hawaii, no spare parts, no huge set of tools. The other thing is (and I mean no offense) it seems to me even if you had all these parts, are you capable of making repairs? You had to borrow a set of tools?
Get AAA. Drive the car. Don't worry about "what if". Life is short.
Chris