It is a FANTASTIC bike. I've just sold mine

as we want something to go 2s up but if I had the cash I would have kept it, I was very sad to see it go
I'm 6'1" and ours had the seat height reduction (SWMBO is 5' 0.25"). I had priced up the optional high seat (£150) and if I hadn't changed the bike I was going to buy that. I suspect you're looking at a full size bike, but it might be worth considering the taller seat.
I honestly couldn't fault it. It was fast enough as long as you fully rotated the throttle, it did 80+ mpg, cost 2&6 to insure and servicing didn't look to be expensive. After 2500 miles, the EXP tyres looked brand new.
As long as it has oil and fuel in it, I'm pretty sure it will last forever. There is a wee issue of hot starting, but I believe BMW have a proper fix for this.
It's made out of tried and tested parts so it should be reliable.
The only thing I didn't like was the starter button, well cheap, but I'm nit picking.
It put a smile on my face every time I rode it. It did everything I wanted it to do so well that I sold my S1000RR. I just hope my new bike is as good
If you fancy a jont up to Edinburgh, I know the local dealer has one you could try

There are some spectacular roads around here to try it on
As for the Sertao, do you really need wire wheels and a sticker kit?
If there is anything specific you want to know, please ask
Andrew