How bad will this be with an automatic JKU?

Don't want to kill it too much.

The charts show 1800 RPM at 70.........

Thanks,

 

My 2012 Sahara with 3.73's runs at 2300-2400 RPM at 70mph. Stock wheels and tires too.

 

From personal experience with my LT315 on transmission always
wants to change gear on highway on very slight inclines...Also with
12 wide tires always wanders...Looks badass though...Just put on my
Rubicon Tires on for winter...Man what a huge difference...Ride quality
comfort speed MPG...Huge difference...