Just find a calm
weather window and good sea state, then stay out in 100 feet of
water to avoid kelp. Perhaps do it in one big hop or take an overnighter in Monterey Bay. My guess is that it would take two, 24-hour days in your vessel in calm seas. Mind the entry and time under the Golden Gate. You don't want to cut corners near Ocean Beach or the South Tower on big swell days. Best to also take that approach during the day. It is likely to be foggy in September and it's a little freaky there to have no visibility in the
fog at night.