Thanks n5296s!
Will look at Sundance and Attitude, shot them an e-mail already. West Valley Flying Club seems to be much recommended as well.
I'm from Estonia and our traffic is unfortunately very quiet and airspace is simple, so US and London for that matter are somewhat terrifying. Have looked at the sectionals and listened now both to KPAO and KSQL and Norcal approach, so it definitely is busy but unless heading North or East through class B seems doable. At least coastal trips from those places seem pretty OK and as I understand even the Bay tour through the coast to Bridge and Bay and back is doable. Might still take a local (instructor) with me for that.