If you're going to get the AddedCare, may as well get the MaxCare (covers 5,000 plus parts, basically bumper to bumper).
To the OP, these are the Chrysler factory service contracts. The dealership will charge you a lot for them, but there are several Chrysler/Dodge/Jeep dealerships that sell them for just a little over cost. $2,300 for the MaxCare Lifetime/unlimited miles plan. Has a $100 per repair deductible but that's chicken feed compared to most repairs on modern cars. lol.
Also, you can use the fact that you can get it cheaper online to negotiate a better price at the local dealer you are buying from. I got mine for $2,400. My BIL bought a new Fiat 500L, and he got his lifetime MaxCare contract for $2,300 from the dealer. I had told him about it ahead of time. He didn't know about it.
But I think it's probably too late for the OP to get these Mopar Added Care/MaxCare warranties. Have to get it within 3 years or so, I think. But maybe check on it; I may be wrong. Had you bought it when you first got your Jeep, it might've paid for itself already in case you had to pay for repairs out of pocket.
But I wouldn't worry about the CVT too much. Life is too short. Just maintain it and you should be fine, and even if it does go out, $4k for a new one is a lot cheaper than a $350/month payment (for 5 years) on a new SUV. If the rest of the Jeep is in great shape, it's worth fixing.