Think big. Stock your flyboxes with plenty of streamers. #8-4 3XL streamer hooks are a good start. Beadhead Woolly Buggers, some tied with regular brass beads, some tied with orange beads work well. Leech patterns, and of course, glo-bugs. The locals up there simply put an orange bead before tying on a hook, and drift that as an easy glo-bug.
If you're going to try for salmon up there, don't bring a little rod. I would go with a very stout 8 or 9wt at the very least...but more likely I would prefer my spey rod. And don't expect to have the place all to yourself...as Alaska is sometimes marketed heavily as the "last frontier" of fishing. I have pictures of the Kenai that makes the Fraser during Sockeye season look like pristine wilderness...lol. But...if you stay away from the most popular spots, or are willing to spend the $$$ to be flown or drifted somewhere, then you will have some solitude. Good luck.