Welcome aboard slyderx
I suspect the first thing you'll notice (after the scaryness of the initial feeling of being so damned high up) is the torque action when you blip the throttle......very different to a 'k' and feels greatwhen you've got used to it....it won't affect you on the road though.
Be prepared to drop it at slow speeds, particularly in car parks when suddenly you'll find that you manage to park it everytime where there's a bit of gravel.....very soon though you'll instinctively park it so you never have to back-pedal it, and you'll get used to lugging her around at slow speed.
PS I'm 6 four 4 and I still had several 'moments'.....don't worry though, once you've discovered that dropping it doesn't automatically mean a grand's worth of plastic needs replacing, you'll relax.
After a K bike, you'll curse the crap lights......do a search on Aux lighting here and it will all be explained and the options detailed.....
Ride the thing for at least a thousand miles though before falling into the classic GSer shiny baubles trap....and no matter what anyone says, don't click the
Nippy Norman's link until AFTER you've paid of Xmas on the credit cards
You have, by the way, impeccable taste sir......and next week you will own the pinnacle of the whole GS range...I applaud your taste and wish you well