This is a bit of a distraction from what you're currently doing, but I typed it earlier and for some reason didn't end up posting it.
Ubiquiti sells some 300' single-mode fiber, but it sounds like you'll need to go further than that.
It's $120 for a bundle that includes 6 fibers.
That's a good price. I wish they gave specs that were a little clearer regarding the thickness of the buffer. I haven't worked with fiber much. Pre-terminated cables are a good option to simplify installation which would otherwise require some expensive
tools. The Ubiquiti FiberCable doesn't include a 'puling eye' so you'd need to make or buy one. I think some of the other options have more robust breakout out cables. Single mode fiber may be bit more temperamental/fragile than multi-mode. If you order a pre-terminated fiber assembly, you 'll want to make it a bit longer than you need, you don't want to some up short. They do sell some products to coil up excess. If you were to buy fiber that isn't pre-terminated, you'd probably want to pay someone to terminate it.
The adapters for single mode fiber have certainly come down in price, but single mode is more expensive and requires more precision for everything to work. If you choose multimode cable, OM3 would be the best choice but OM2 would also be fine.
There are different variants of outdoor rated fiber. Indoor/outdoor is generally the cheapest. Outdoor is generally going to be filled with gel and more of a pain to work with. Gel filled cable can only be brought indoors 50', it sounds like the gel may be flammable. Some outdoor cable uses a dry gel or other means of stopping water. Direct burial fiber is generally armored meaning it has some kind of metal sheath in the cable. For the OP's needs and in conduit, I think non-armored cable (indoor/outdoor or outdoor) is the probably the best choice (no metal).
If you use switch hardware that takes regular SFP devices not SFP+ the adapters are pretty inexpensive.
Like these:
https://www.amazon.com/dp/B01N4KWOI1/ https://www.amazon.com/dp/B01MY5498F
The other retailers you linked to also have pretty good prices. Here's a little look at pricing from from them on a variety of cable for 100' of indoor/outdoor cable, LC/UPC:
FS.com: 2mm breakout tubes, 100', Pulling eye one end, $30 more for both ends,
6- Strand OM 2: $186 shipped, 4 Strand OM2: $164 shipped, 6-strand OS2 (single mode) $160 shipped,
Fibertronics based in Florida, 2mm breakout, 100', Pull eye one end, $20 more for both ends,
OM3 6- strand, $216 shipped, OS1/OS2 (idk) single mode 6 strand $182 shipped, 4 strand $166 shipped
DiscountLowVoltage is more but shipping is free over $200. They have a fair amount of educational content in the form of videos and blog articles.
Some more local options
Fiber Optic Cables in Oregon (OR) on ThomasNet.com
Wire & Cable-low voltage
Make sure to call 811 or your local utility locating service before you do an trenching along the driveway.