Not inexpensive, but this outfit has been running charters in that area and Alaska for many years. Fully crewed, excellent cuisine, complete with an on board naturalist. They take up to 16 so could handle your group.
The Island Roamer, 68' Sailing Vessel
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"