I think that I already mentioned that the floor is out 1/4" just in the span of the two doors. You don't feel it, and certainly can't see it. However, if I had cut the door bottoms straight across, it'd be very noticeable. So instead the left side is 1/4" longer than the right side, and I cut that angle to match the floor. That gave me a perfect 1/4" gap at the bottom of the doors. I hate when interior doors have a giant gap at the bottom.
As these solid Oak doors are heavy, I installed 3" brass screws into the hinges on the framing side. These reach into the studs and not just the jambs. Then I used two inch screws on the door side of the hinges. This will guarantee no sagging over time.