Sd and LA

Hi, I’m planning a trip with me and my best friend this summer, we’re trying to stay for 6 days, i was wondering what are some good places to hit up for fun? I have been to SD a couple years ago, but haven’t done as much because I went to visit family. So any recommendations would be greatly appreciated! I was thinking to stay in SD for the week, but do a road trip to LA for one of the days that I’ll be over there. So yeahh, lmk!