In Alaska, I contacted the Alaska Housing Finance division. On their website that have information on the foundations that are Bank Approved for loans. If you build like they suggest, a bank will finance the sale of your remote building. I did. The taxes are more, but I can walk away and get my money back when I am done with my cabin.
I had to dig 15 holes by hand. 3 foot x 3 foot and 5 foot deep. I used the sno go in winter to haul in 5280 pounds of Traction Sand in 60 pound sacks. A lot of work.
Then I put in two bags of rocks in the bottom of the hole, packed it down. Drove to the river, hauled loads of boulders back to the cabin site, filled a layer of boulders over the smaller rock.
Layer after layer, until I topped each hole off with another couple of bags of Traction Sand. This is crushed rock, little square pieces. It will pack down like cement. If you use round rocks, your foundation will just keep sinking into the dirt. Use the Traction Sand to take up the space in between the layers of boulders.
Then I built a All Weather Wood pad, layered it up, put a 6 inch saddle bracket on top, then ran my beams in the brackets. The 4 inch deck beams will not support a cabin. Get the 6 inch, adjustable, galvanized and put some grease on the threads before you adjust the cabin height.
I would think you would have something or someone to contact that would help you if you want to go this way. You can always check the website I mentioned to see what they allow here. It will give you some good ideas.
The pilings ATT mentioned above are really nice. If you can get the machine to the site that put's the pilings in, your golden. Way less work, last's forever, won't rot, etc. etc. fantastic in wet areas too. I am not sure if they are bank approved yet here in Alaska. I think they are the best option if you can swing it and get the bank to approve it. Tell the tax man, so he records it correctly.
The support you posed, will only hold a deck, not a cabin. Says right in the title, deck support. You want the galvanized, adjustable 6 inch, that goes inside a much bigger cement block. You don't use the regular size cement block for decks, it's bigger than that. SBS in Wasilla Alaska carries them if you want to look them up or call them for info. They do not stock them in Anchorage. Only in Wasilla, for remote cabin buildings. Hope this helps you get the cabin built.