You might want to lower it until you get some miles on it.
Are you kidding? The KTM is at least two inches taller than the Versys. Seems to me they are around 36" seat height.
Maintenance on a versys is virtually nothing. Change the oil every 5K and oil the chain.
Along some 10k or so you should check the valve clearance. Oh, and clean the air filter once in a while and make sure nuts and bolts aren't falling off.
The quirks of the versys are minor. Browsing the forum will reveal things to watch for. Or if you get one and some little gremlins pop up you can search for them here. These bikes are virtually flawless, many members here getting tens of thousands of miles out of them with very, very little maintenance. The fuel injection is fantastic, suspension is good stock but not premium, can be upgraded for the really fussy types, good tankage, great ergos, great performance.
The few things that do pop up are easily remedied. For example, most want to address the seat sooner rather than later. It slopes about 10% toward the tank and tends to keep driving you there. Easy fix. Compared to your katoom you'll think you're on a pillow. The mirrors generally aren't setup right from the dealer, so they have to be disassembled and tightened properly. Suspension has to be dialed in to your liking. Some have complained about buzzing in the forward cowl or speedo unit. Good write-ups and ideas to deal with it.
There are zero stories about major problems or engine problems. They are very solid bikes. Keep in mind the components come from a long line of the ninja 650. Nothing really new-fangled here, just an updated design/application. It's not a bimmer or a duc, but doesn't cost like one either.
Most feel they get 90-95% of what you get in the premium bikes, maybe even more, for about half the cost. You can have two bikes for the price of some its competitors. These bikes tend to be instantly liked by anyone that test rides one. Every review raves about them. Kawasaki hit a home run with this one. It does so many things well, and universally is said to be fun. Everybody says its fun, and that's the reason there are so many enthusiasts here.
Other bikes on my shortlist when I decided on the versys:
Triumph Street Triple/Tiger
I would still make the same choice, almost a year later. I think I would like one of the new F800GS's, but gee, about fifteen grand to go that way. Could buy TWO Versys for that. And certainly not get twice the bike.