Peter - There is a lot of info in the various threads on TTOL which will give you a pretty good understanding of what to expect. Short answers: 1-There is a Q anchorage in North Sound that you can sail to any day you want. You probably won't get your day-5 all clear until later in the day. 2-There are still locals cruising around servicing ice and trash needs.
You're going to have a great trip.