<p>I’m going to visit and I want to see SF, take a Cal tour, and see the Cleremont Canyon Preserve. Should I go for 3 days (1.5 days adjusted for travel time) or 4 days (2.5 days adjusted for travel time). I’m going alone so I don’t want to get bored (I won’t be staying out at night in SF to be safe since I don’t know the area yet).</p>