The Busa is the perfect all around bike. It does everything well. You can cruise, drag a knee, wheelie, dragrace, tour, ect. The aftermarket for it is huge, so you can change pegs, seats, and bars for comfort, add luggage, stretch it for dragracing, basically anything you want to do with it.
I've owned a 750 and 1000 and ridden most every japanese sportbike. I'de ridden gen1 and 2 Busa's before I bought a gen2 over 2 1/2 years ago. The 1000s are great, and even though I still ride them I'm uncomfortable and hurting in under 20 minutes.
The Busa is a little wider and longer than a 600/750/1000, and obviously alot heavier, however it's not any harder to rail corners with. There does come a point when it just can't get through them as fast as a smaller bike, but you really have to be pushing it to it's limits to do that.
If you have the skill you can do most anything with it.
It's almost 200lbs heavier than an F4I too, so you feel that when you back it up or have to move it when it's not running.
Just don't let anyone tell you the Busa is straight line only bike, as they have no idea what they are talking about. Myself and many others can drag a knee and wheelie them just the same as any other sportbike...and be more comfortable in the process.
If you're comfortable sitting on it and like how it feels, everything else is in the wrist.
Go for it.