Hell of a deal you got man. It's fun to mix up the riding every once-and-a-while and this will be a good addition to your collection. As some other people have mentioned, I think figuring out a way to chop that license plate hanging reflector thing off would be #1 on my list!
I like it, nice color. Not sure if you wear full leathers when riding your Harley but I would recommend using a set when riding the Ninja (and I have the scars to prove it). It would never be my first bike, but you got a wicked deal on that thing. Plus, it's nice to add diversity once in awhile, just as long as you remember where your true heart lies, lol...
Enjoy the ride man, try to keep that front wheel down on pavement, it's so damn tempting, and that was my downfall, lol...
Thats a nice addition to your stable. I think most are missing the point that you've added another bike; not replaced. The more bikes in the garage the merrier and diversity is always a good thing. Nice job!