Considering A 2018 Tiger Xrt

I sat on a 2017 Tiger Xrt and the seat height was perfect for my height, 5ft 9.5 and age (55) but I'm looking at getting a 2018 or later, as it's slightly lighter, has a re-mapped ECU, TFT display and a few other things I like. Hopefully, I will be going on some adventures as well, planning a trip to Alaska at point, so heated seat and grips is a nice thing to have as well.

A few questions.

Is the seat height the same on the 2017 vs 2018?

Also, what should I look for when buying, any specific things to look out for?

I live in the USA and many of the roads around (Oklahoma) are pretty bad, also there are quite few gravel roads I will be on, likely 90% on road 10% light off rood. so I'm also not ruling out a XCA, but I believe the seat will be higher than Xrt, but I need to sit on one to know for sure.

Any recommendations for slightly more off-road tires for an Xrt?