One thing not mentioned in this thread is that the Busa is a roomy and comfortable bike to ride.
If you’re tall ( over 5’11) it will be so much better for your frame than a cramped liter bike I can assure you, I’ve ridden the Blackbird and the Busa has wider bars and a wider flatter seat with a little more reach to the bars, oh and more punch ! !
You will love a Busa first time you ride one, but you’re eighteen?? Wow, sounds so young to me, shouldn’t you be still zapping around on scooters or dirt bikes ?