As long as you can get a toe down you'll be ok. The Z is not the lightest in the catagory but its close. What little extra weight it does carry will benefit you with more stability on high speed highway riding.
And since this is your first bike...All bikes seem "big" to novice riders until you get some seat time. After a year or thereabouts, you'll have to dig deep to remember what all the fuss was about.