I remember the Saks – it was there for the longest time – but the Vons was also there on a smaller footprint. (although it was a Safeway.) We used to do munchy runs when we were hanging at La Jolla shores in High School.
BTW – I went to Clairemont HS… (pre opening of UCHS) we may have crossed paths.
Not sure if Mothers and Organ Power were the same – I know I went to Organ power a few times in jr high and HS… I know I went to Mothers a LOT in the early 80’s… fond memories of watching bands there.