do it and get a monster of a bike (my last one was a zx12r with a engine full of muzzy tuning parts and 186bhp at the wheel god i miss that bike so much
) and go and ride the guts off it for ten mins.
then once you stop shaking vow never to that again
no seriously tho if you aint used to modern sports bikes (and they are some serious bits of kit when you want them to be) working up to a bigger bike is a very good idea IF you have the will power that i never did
in saying that get some thing like a early 90,s zzr 600/cbr 600 still a very capable machine but nice and cheap and if you bin it just street fighter it
and a good stepping stone to bigger/more powerfull machines (that you will NEED !!!!!) lol
and as said above dont skimp on protection for your self a good quality set of leathers/boots/gloves/helmet are esential