Yeah, you don't want to camp too close to the shore line - tidal changes can drown your tent, if you're not careful. Have GOOD rain gear - it will rain. Be prepared to deal with the wind (tie the tent down) as it will blow. Will the boat be close by or do they have a schedule to check back on you? Schedules got to hell quickly on Kodiak, usually because of the afore mentioned wind. A good back up plan should include a sat phone.
I don't walk anywhere in the dark, if it can be helped. As said earlier, the bear thing is usually overstated (and over worried about) but why go out of the way to look for trouble. If you do walk in the dark, stay together and make noise. Bears may still be looking for some late run silvers, but they'll also be looking for almost anything else to eat, this close to hibernation time. When cleaning up a kill, its a good idea for one of you to be standing with his rifle in hand, on guard, so to speak.
From what I've heard, the deer population is doing great (as its been 4 years since the last killer winter) and you should have a great time. You might want to check with the F&G bios (in Kodiak) to see if there have been any bear problems where you'll be dropped off ( if you know, beforehand). I've always found the bios on the island to be extremely helpful, with questions. They are also very protective of "their" bears.