Car looks great. I would move on the black grill though. There is another thread showing the difference and I think it really makes the car look better and it would certainly match up well with your new wheels.
The OEM wheels IMO are the biggest issue for me regarding the Q50. I think the larger Sport Trim wheels look good with the black, gray and silver colors, however the gray-trimmed wheel clashes with other colors like the brown and red. I wish they offered a non-shiney, polished-finish wheel.