I came to the hayabusa from a honda VTX 1800. I won't try to tell you that a busa would be a bad first bike for you, but if you have never even sat on a bike before, you may seriously want to consider something more manageable. With no experience ever, i would think it would just be WAY too tempting to twist that throttle. My VTX weighed in at about 800 lbs wet, and had about 90 hp. The busa weighs almost half that, and has almost twice the power, and let me tell you, I could get myself into plenty of trouble with excessive speeds on that if i would have been so inclined. The busa is a whole different world though, as far as that goes.
As for the insurance question: I'm only guessing here, but I think you'll be WISHING your insurance for a year was only 4200 bucks for a busa. They don't base that so much on the damage you could or would do to the bike (or another vehicle) in the case of an accident, but the damage you could do to yourself. That tends to me a LOT more expensive than fixing a bike...
As for the MSF course: You probably want to get signed up for one of those soon, because they tend to fill up fast in a lot of areas. The MSF class will give you a lot of good training on the basic operation of a bike. There are two different classes you can take, the Basic Rider Course, which covers all the fundamentals of riding, such as stopping, rolling on the throttle, turning, emergency lane change, inspecting your bike, learning how to keep yourself safe from cagers, etc. Then, there's the Expert Rider Course. That takes the things learned in the BRC and expands on them, essentially. They recommend you have a couple year's riding experience before you take that. Also, you'll take the BRC on bikes that they provide, and then take the ERC on your own bike.
Hope that helps outline some basic info for you. Welcome to the forum!