I wish you luck. I wouldn't buy the 2015 unless they've documented the timing service and give you a warranty. And don't park it outside. I'm not exaggerating when I say (I believe I've even shared this in a previous comments years ago) that every single Jaguar I've ever serviced has had wiring damage due to rodents.
I believe it's something to do with the coating they use on their wiring and harnesses. But I never had a Jaguar in my shop that didn't suffer from some type of wiring damage as a result of rodents chewing on the wiring.