Berkeley sounds nice! It should only be maybe 20 minutes from me. And the times you mention are fine with me.
Besides my off weekends, which I named, FWIW I can also do any Sunday morning, because I don't work until later in the day, or any Saturday or Sunday at 5:30 PM.
I am pretty poor but I'm sure I could manage to throw in some hot dogs and/or homemade potato salad.
Who else is in?