New NSX's often have a bit of brake noise because of slight surface rust which collects coming across the ocean, plus when sitting dockside. Honda has reduced this somewhat by the introduction several years ago of installing plastic "hub caps" over the wheels to protect from splash. Some moisture still gets thru however.All brakes, and clutches have a break in period which is quite simply do not overheat them or panic brake (if you can help it) for about 800 miles. Conversely, long, light braking is not good either for glazing, noises. Brake normally, don't baby them, don't abuse them.
As to road noise, you'll just have to check all the rubber seals at window and roof joints and make sure you're all closed up. Try closing the windows with the doors open, then closing doors and go driving. If it's quieter then you may have a window out of adjustment.
Congrats and have fun,
MB