Holy moly there is a ton of misinformation in here and you are WAYYY over thinking this....
Sysadmin and network engineer here....
Put 2" conduit in the trench for your power to run through. In same trench throw 3 1" conduit. One for a Cat6a cable 2 for "future proofing".
Cat 6A can do 10,000 mbps per second... That is more than enough for you and I right now. a 4k video stream needs 25mbps so you could have 400 different boxes streaming.
In the future when fiber is cheap and easy toss it in the backup conduit and get it running before you cut the copper. In 10 more years run the "New Future ****" in the next conduit before you cut the fiber, or pull it with your super strong pull cable IE "Cat 6A".
Done and done.
