Dont Do it
If you must, and I mean no other way to persuade you otherwise get the Yamaha YZF600R, not the R6. The 600R is a 10 year old design, very easy to ride (compared to the newest 600's) and more forgiving.
I would highly recommend a dual sport like a KLR 650, DR650, DRZ 400SM etc, but due to your height those mile high seats may be an issue. SV650 or the Ninja 650 would be the edge of the performance envelope that I would recommend to a new rider. Buy a used ninja 250 or ex500 and ride the wheels off it. Take the MSF course and plan on a Full face helment, jacket, gloves at the bare minimum. Jeans are only good for scrubbing 5 to ten MPH on a crash, anything above that is skin muscle and bone. If you think gear is expensive, price a skin graft or just one day in the ER... Buy a cheap bike, but good gear.
If your Ego cant take being seen on anything but a new supersport think of that ego when you drop it in front of your riding buddies. That is if your lucky and thats the only thing you do to your new 100+hp 370lb racing missle (how much HP does a new Honda Civic have vs. the weight of said civic in relation to this puny 600). They may "only" be 600cc's but the new SS's are the fastest you can make 600cc's go. With power to weight ratio's that make a z06 Vette look like a Prius. Would you put a loved one in a z06 as a first car? Not very sensible or safe correct? So dont do the same for your first bike. At least you cant fall off a car...