Welcome. Buffalo and NF are my old haunts. Loved to ride to places like Fort Niagara and the Flying Tiger restaurant right by the airport. Sadly I read on the net that the place closed down down years ago.
As for bike choice... I actually much prefer the Z900 far more than the Z900RS. It's less expensive, more comfortable,and feels lighter and quicker on its feet. The RS's wide handlebar just made the steering kinda awkward. In some ways, I actually prefer Z900's engine more than the N1k. If Kawi ever make a Ninja 900 SX with that engine and similar trimmings as the N1k, I might trade mine in for that.
Kawi, of course, does not. So for now, the N1k is just a better all arounder than the naked Z900.