Where are you staying at Sequoia? How many nights?
A couple of places I highly recommend ...Go to Crescent Meadow, take a cooler for a picnic maybe ... When you go to Crescent Meadow, you'll go past the tunnel tree, where your car can go under a fallen sequoia, and you can go to Moro Rock or Crescent Meadow. If you decide on Moro Rock, you can go up the 1/4 mile of steps to the top & get a wide view of everything. The only bad thing about that is that since the San Joaquin Valley is so smoggy, you'll see that, unless it's been raining. Crescent Meadow is awesome! I always like going there early or late afternoon when the deer come out. We've seen deer and bears over there several times. They won't bother you - you just need to not bother them.
You'll also pass the autolog. They closed that to cars parking on top of it a couple of years ago because the tree can't support the weight anymore.
While in the area, also visit the General Sherman tree - the largest living thing on Earth.
You call do all this in about 3/4 of a day, if you take your time.
Another thing you can do if you'd like, is visit Hume Lake - it's a small lake, used in the old days for milling, and there is a beach there, and you can rent kayaks (1 person), canoes (2 persons), or rowboats (up to 4 I think).
Yosemite is about 2-3 hours from Sequoia. The Wawona campground is about 15 minutes from the entrance to Yosemite on the 41. You won't see that famous tunnel picture of the valley until you get there, and that is about 45 minutes from Wawona - the reason so long is because you're up in the mountains and the road is winding. When you get to the Yosemite entrance, you can turn right & go to Mariposa Grove, which is a grove of Giant Seqouias ... take the tram to the end and walk back - very nice. If you turn left, you'll get to Wawona - beautiful hotel built in the 20's on your right, the river and campground to your left. There is a little waterfall there & you can hike to the base in about a half hour, or you can hike for 8 hours to the top.
One of the days you're there, you HAVE to go to Glacier Point - you'll get a beautiful view of the high Sierras, and you'll also see the Valley spread out before you.... In one of my links (I think Yosemite 2000), you can see the view, and I show where Upper Pines is - hold the cursor over the picture.
Southern California Beach -- A lot of people like Huntington Beach, and they have fire pits there - great at sunset. I like Newport Beach because the waves aren't as rough, and nicer for swimming. It's a nice atmosphere, and there is a restaurant at the end of the pier, if you'd like to eat there, or you can go to Joe's Crab Shack, or any other of the several places there.
