I geared mine for the quicker acceleration. I think that I went with a 14 tooth up front, and a 47 tooth on the rear ( like the ZZR250) -you need a longer chain 520-108.
I documented it in one of my posts...
Take a look at this write up
https://faq.ninja250.org/wiki/I_want...nge_my_gearing
Also, go with "smaller" tires. Stick with stock size - not the "plus" size. E.G. 120 width, not 130, and same sidewall...