My dad had 2 woodmizer mills years ago. First one was a non-hydraulic mill, second one was a super hydraulic. Night and day difference between the two. We spent one day cutting with both mills. I was on the super hyd. because it had a programmable board for preset cuts, my dad was on the non-hyd. I would cut a pine cant on the super hyd, move it to the non-hyd mill for him to finish cutting, cut up an entire other log and another cant before my dad finished cutting the previous cant only! The super hyd. was FAST and a LOT less work!!
We cut all the 2x6 and larger and long 2x4 for my house but bought precut fir studs. Saved a bunch. A sawmill will work your butt off, especially if you don't have the equipment to move lots of lumber several times, and move the unusable slabs to a burn pile. Minimum equipment would be a tractor with front forks. That's if you want a production mill to sell lumber.
My wife's grand-father ran a big circular saw mill all his life. They had like 7 boys in the family and NONE of them wanted that sawmill when the dad died!! That's work!