I had a Tiger 800, like yours a 2019 MY, but I didn't have it for long enough to know what to look out for on an older bike.
There are three models: XRx (the standard model) XRt (top end) and XCa (off road). Don't know which your's is, but probably not the XCa as I think they all had spoked wheels.
The engine on your bike is completely beautiful, but the beauty stays largely hidden until you reach higher revs. Keep it in a lower gear and it will reward you. 4th - 6th are for motorways and dual carriageways.
Good to see it has crash bars. The top box is a good idea too. Don't be tempted to get the Triumph panniers - they stick out so wide as to make filtering almost impossible. I had a pair, but did my best to avoid using them as much as possible.
I found the suspension was a bit too budget for my liking - the front didn't track well, and it was unpredictable when leant over. I had a new shock put on, and resprung forks and this fixed all the problems. But with suspension what doesn't work for one person is fine with another, so see how you get on. If you find you need to change things, there's not much adjustment you can do with just a spanner.
Enjoy the bike! And the sound - it has that great wail that can only come from a triple.