8h 600 Mile Roadtrip - Advice

Hey y’all, my job just offered me travel from GA to Louisiana. It’s about 600 miles and 8-8.5h.

I’d like to do it in my ‘64 Dart 270, 225 /6. Do y’all have any advice about what I should look for and do before I go, what I should be checking along the way, any precautions, etc.

Currently I’ve got an oil leak from the rear main seal, but no metal filings or anything in my oil, just a leaky seal. I’m going to be getting my engine rebuilt soon, after when this trip is.

There’s new coolant hoses and coolant in the car, running 10w-30 oil, and no ethanol gas. It’s got a single barrel carter BBS and 1.25” exhaust if that’s relevant.

I think I should be fine but is there any advice? I currently daily drive this car and have for over the past year. I haven’t had any issues since February with the car that took it out of commission for any period of time. The leak developed a few weeks ago and hasn’t gotten any worse. 1 qt over 3 weeks or so, driving 20-40 miles per day.