Thank you everyone. Now i have amended my itinerary, and got started with the booking. I have heard of a National Park pass, is it something i should consider?
This is now my latest itinerary :
Day 1 Half day in Las Vegas - Sleeping in Las Vegas
Day 2 go to death valley - Sleeping in Bishop
Day 3 Continue to to Yosemite via tiago pass - Sleeping in Yosemite NP
Day 4 Yosemite NP, full day & Glacier Point - Sleeping in Yosemite NP
Day 5 Full day at Yosemite NP,Continue to San Francisco ( 4h drive ) - Sleeping in San Francisco
Day 6 Full day in San Francisco - Sleeping in San Francisco
Day 7 Half day in San Francisco, Drive south stop in cambria ( or monterrey )
Day 8 Leave early, Continue to Los Angeles, half a day there - Sleeping in Los Angeles
Day 9 Full day sightseeing in LA, continue to 29 Palms in the evening - Sleeping in 29 Palms
Day 10 Full day at Joshua Tree National Park - Sleeping in 29 Palms
Day 11 Scenic drive along Route66 to Grand Canyon - Sleeping in Williams
Day 12 Full day at Grand Canyon - Sleeping in Grand Canyon
Day 13 Drive to Page in the morning, visit Horseshoe Bend in the evening - Sleeping in Page
Day 14 Antelope Canyon/Glen Canyon, continue to Bryce Canyon in the evening - Sleeping in Bryce Canyon
Day 15 Visit Bryce Canyon, continue to Zion in the evening - Sleeping in Springdale
Day 16 Full day at Zion National Park - Sleeping in Springdale
Day 17 Drive to Las Vegas via Lake Mead Scenic Drive and Valley of Fire - Sleeping in Las Vegas