You may have opportunity for canadian halibut. Entering at Victoria and picking up canadian licenses should give you opportunity out on the banks.

Check out the fishing reports and area how-to articles at salmonuniversity.com.

Pick up and study the Saltwater Fishing Journal http://shop.johnssportinggoods.com/prodInfo.asp?pid=1103&cid=43
for both locations and techniques.

When crabbing, find sandy bottoms for dungeness crab. Rocky bottoms will give you rock crab which are pretty and have huge claws but not much body meat and not as prized for eating. Your charter company providing the boat should be able to hook you up with crabbing gear. If not, you could probably buy 3 crab ring setups from outdoor emporium in Seattle for around $100 and sell them at the dock or leave them with the boat for a credit off your fee at the end of your week.

There's some San Jaun Island cruising guides you may want to pick up as you're planning your trip (many exist - sampling below):

http://www.sanjuanyachting.com/R%20and%20M%20SAN%20JUAN%20ISLANDS%20CRUISING%20GUIDE%20-%20Power.pdf

http://www.amazon.com/Cruising-Guide-Puget-Sound-Islands/dp/0071420398

http://salishseapilot.com/sanjuans.htm

Absolutely gorgeous area! Will be really hard to have a bad trip there.

The area from Iceberg Point to Lime Kiln State Park is where the Orcas are most consistently found. Use common sense and know the regulations and you should have a great viewing experience. You'll have company viewing the whales. Bring zoom lenses if you want good shots of the whales.

Have fun planning your trip!