I never been to these places, so any ideas are appreciated. We are avid hikers, so giving the most time to Yosemite. However, Im a little worried about things being closed or too cold. How does this sound for a trip in late March? SF -> Big Sur -> Yosemite -> Sequoia National Park -> Death Valley -> Las Vegas

Saturday: Arrive in the morning, drive to Big Sur and explore
Sunday: Hike around Big Sur, drive to Yosemite
Monday-Thursday: Yosemite and 1 day at Sequoia Friday: Drive to Death Valley and explore
Saturday: Death Valley
Sunday: Drive to airport in Vegas
Total driving distance (per Google Maps) ~ 18hrs