I've been ridin dirtbikes since I was 5 my last bike before my Harley was an R1
it would do 150 in the 1/4 mile and I would find myself wheeling all over town, it would wheelie very easily. It is inevitable that you will go down on a bike always very unexpectantly, i've put down my gixxer750, my 500 ninja, and a harley all due to speed and pea sized gravel, it's slippery, Just respect your bike , the most dangerous thing about bikes are the people driving around you, you always have to drive defensively, the old bitty in that SUV sees you but will always pull out in front of you anyway, her vehicle is bigger than yours which makes them think they have the right of way.
Wow where you run 150 in a 1/4 at? Was it here in montana? I had an 04 r1 with 162 rwhp stock swing arm and ran 9.9s at acton @ 142 was my best...there are busas here that dont pull 150, must have had some real mods.
As for a bike, that 04 r1 was my first bike and if you like speed and have a good head on you go for a 1000cc or atless the gsxr 750. most my friends hated there 6s after a month or two...like said about better to have the power and not use it then to wish for more later.