Your setting should be based on two factors. How high is the exterior humidity going to be (dry or lots of rain)..
How often it needs to run to keep down the humidity. I keep my mobile home in Venice at 84 during the summer and that allows my AC to run 2 to 6 times a day. That keeps humidity down and we always come back to no mold or mildew. During winter we would have to turn it to 80 or lower to keep it running once or more a day but much less rain and humidity.
Check your AC air filters if you have them before you leave.
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6