Well your second choice sounds nice. But check out the Armada also. Unfortunately the 3.5 TT engine they put into the GX is the very same engine Toyota puts into the Tundra so I believe they are using all or at least most of the new engines to replace those 100,000 plus that are blowing up in the Tundra under warranty. I to was in line for a new GX but ended up with an Armada, which I’m very happy it went this way. O From the first year issues with the GX I’ve seen on some forums I wouldn’t be very encouraged to wonder off into the wilderness of Alaska with an unproven first year model. I’m sure you won’t find a Lexus dealer behind any bush in Alaska, I mean the Toyota company is having troubles getting parts for people in the populated areas like Canada and the U.S. as an example I’ve read people are waiting months for GX windshield replacements, the hood wobbles at highway speeds, a few transmission issues etc. etc. most is small stuff that wouldn’t leave you stranded but those engine problems are major even though it’s mostly in Tundra’s an d LX’s it’s the same engine in the GX and with the GX being new maybe all it needs is some time for the issues to come up. Lexus as made a superior vehicle in the past and I believe they will get it straightened out but I wouldn’t think you would want to be a test subject in the backwoods of any place.. your trip sounds like fun so have a great time. Also if not to much trouble please post what you end up doing. Oh, had my Armada now for a few months and just loving it.