You look well set-up. On my last trip to Alaska, primarily around Denali in the back country... but other places as well.. there was one bit of gear I found essential: mosquito head net! Even the jungle strength DEET was insufficient: they may not have bitten me with all the DEET I had on, but they damn well BATTERED me without mercy. I bought a head net that slipped over my hat; cut a slit for my cigar, and was GTG.

Enjoy your trip.