It sounds like most of your questions have been answered, but I'll echo, we have plenty of commuters coming from the land of the rising sun, so it's definitely do-able. No chance of getting it in training right now but it's not a senior base. Go SFO 737 in training (trust me, it'll be available) and then transfer a year or less in. Guam is pretty amazing. If you haven't been before, it's like Hawaii but less developed, and with a very positive and unique vibe. You might actually decide you want to live there; I often do but my wife is based in Hawaii so it's more of a lustful idea than reality for me. If you're a reservist or a veteran, Guam is even better; let me know if you are and I can recommend some things there and on Saipan over DM. Guam still reminds me in a lot of ways of parts of the US in the 1990's. They still play Seinfeld reruns in local establishments and until the Big New Yorker came back last year Guam had the only pizza huts where it was a permanent menu fixture/item. It's not the land of milk and honey but it's a great place, and you won't get knived going to the wrong beach.