Congratulations on your 17Z. I hope you enjoy it as much as I enjoy mine. Some of the 17Zs came with a sky light and others did not. It was not an option. Aluminum wheels, oven, surge brakes were options in 2010 when I purchased my Z. Outside grill, I don't know about. (first I heard of one coming with a grill). The A/C (13,500)is part of the customer value package, along with the spare tire, awning, bypass, microwave, and the stereo.