Skywalk is extremely expensive, and they will not let you take any photographs. It is part of the Native American reservation, not part of the National Park. If this were my trip, I'd stick to the National Park.

Also if this were my trip, I'd go from LA to GCNP to LV. From LA to GCNP is a 10 hour drive in good traffic. GCNP is so much more spectacular! Then GCNP to LV is 4-5 hours. Drive to GC one day, see it the next (don't miss either a sunrise or a sunset), and then drive to LV the next day.

Donna