You did the right thing by buying it, but I'm not so sure about keeping it.
There are just too many stories of Nissan CVTs crapping out, and at high cost to the owner. That's what happened to my SIL's 2016 Rogue with only 125,000 Km (78,000 miles).
Here is one commentary from a source that I trust - [watch from 3:28 - 6:45]
It might work out fine if you change the transmission fluid religiously but why take the chance? I wouldn't have a Nissan with a CVT. I'd dump it and get a Toyota or a Honda.
$9800 doesn't get much Toyota or Honda these days

. But we don't put a lot of miles on it. 8000 a year or so. I may buy a cheaper-ish CVT off of car-part and stash it in the shed just in case we need it. I'm not too afraid of them any more.
I did a lot of analytics on various message boards and watched a lot of failure teardowns. There are quite a few higher mileage ones out there on facebook groups, message boards - but they all have the same thing in common - frequent fluid changes.
I always thought it was the metal pusher belt that failed and ruined the transmission. Surprisingly, it's not. In a lot of cases, people have DIY rebuilt their higher mileage CVT and continued using the original belt. There's two popular failure modes. The fluid is definitely NOT up to the task and kills the transmission. 3rd one is just from abuse.
First failure mode is the death whine. That's from the pup failing. As soon as the pump fails, it's game over for the transmission. The fluid just can't handle the breakin material - filters going to bypass, etc, and the breakin debris kills the pump. The second is the "big" bearings fail on which the pulleys ride and then the belt slips.
The very rare failure is from when someone shock loads the transmission. The pulleys ride on ball bearings to transmit power to / from the shafts that go to the engine and differential. A common upgrade when DIY rebuilding one is to use pins.