The 350Z actually used to be one of the more reasonable dream cars of mine, but since I got my 328xi, I don't even want the Z anymore! I even tried out a 370Z and while the 328i is noticeably slower, it's still plenty quick and handles corners unbelievably well. That 50/50 weight distribution is more noticeable when you push the car than I ever imagined it would be. I'm extremely happy with it and I'm sure you'll continue to love the car as well! You most certainly have the power though too, haha.
Congrats on the purchase and welcome! Looks great!