+1 on all the above. And welcome to the Greatland
Here on the bottom of the Kenai peninsula (200mi south) 90%-ish of our firewood is spruce, the remaining being birch and scrubby alder. Locally, the best selling saw for years has been the 026/260, and most 60cc saws are 029/290's. The bark beetles took pretty much everything justifying >20" bars. From what I've seen around ANC, the species are slightly different, but the modest tree size is the same.
Despite the rugged image bestowed upon we Alaskans, the irony is the actual firewood cutting just isn't that challenging-- heck, my father in NJ needs a bigger saw than I do. I still really want a 261 or 361, but unless one comes along at an irresistible price, I honestly can't justify it.
Like the others, my vote is for packing the 50cc saw(s) and leaving the big boys down in hardwood territory.