Don't run anything but CVT+4. It may be expensive still, but its not as expensive as replacing a transmission.
The Dodge Ram and Dakota owners since 1994, and maybe earlier, up until this very day have learned the hard way that Chrysler automatic transmissions only work well with ATF+4. Anything else ruins them in short order. I wouldn't take the risk to think that the CVT would be any different.
If you want to do some serious research, maybe check out what the Nissan CVT owners use for transmission fluid. Their CVTs are close cousins to ours, since Chrysler had a Nissan subsidiary make the CVTs for them.
2012 Jeep Compass Sport 4x4
2.4L I4, CVT II, Freedom Drive I
2010 Dodge Dakota Quad Cab 4x4
4.7L V8, 545RFE, Big Horn Edition