If it were me. I'd add AC to that build, but them I'm getting old. Adding AC to my old beater made it so much more pleasurable to drive.
This past Sunday, I drove 70-75mph up over the Grapevine with the AC set at 70, to have lunch with some car guys at Buttonwillow. On the drive I remembered driving this same truck So Calif to Oregon a couple times. UGH! At that time it had 4.56 gears and no AC.
Gear it right, add AC and hit the road.