Don't even need to read this to say 'it's a bad idea' - at least without A/C

. Driving to Daytona, roughly 100-ish miles away is enough for me cruising at 60 MPH (@ 2,800 RPM) on the interstate. We're now looking at getting A/C for our daily driven (classic) Dodge truck. I'll suffer all day in a 'hot rod' or 'muscle car' but not in a cruiser or daily-driver style vehicle.
What I would personally bring on a long road trip -
rechargeable work light & headlamp
2-spare WIX fuel filters
3-5' rubber fuel line w/ clamps
aluminum floor jack & jack stands
5-quarts of ATF (Type F)
5-quarts of 10W40 conventional oil & filter
5-gallons of water
1-quart of brake fluid
1-pint of diff fluid
RTV (gasket maker)
1-quart of power steering fluid (if applicable)
Roll of Gorilla Tape
Gloves
Shop Towels
Tarp
2-dozen Zip Ties
TOOLS!