Don't forget entry and exit routes. Other things i try to do is get in the stand 45 minutes to an hour before daylight and i will sit in the stand in the evening until it is completely dark.
If I'm not on stand @ 45 minutes
BEFORE first light, something's wrong!
In many, many setups, your "odds" are cut in half for the morning hunt if you're not on stand well before light. There is typically a tremendous amount of deer movement during that 30 minutes before first light, and many these deer will actually bed near you if you're already on stand. You'll see them later, but if you're coming to the stand after they're already there, you're busted.
As far as deer not easily catching your scent, seems to me the magic height begins around 22 feet or higher. I seldom go above 25 feet, seldom below 22, and seldom have even downwind deer become alarmed by my scent. But if in a typical ladder stand of 15 to 18 feet, you'll get busted nearly every time a deer is downwind. It is mainly for this reason I do most my hunting in a climbing stand, so can get higher, as well as easily relocate from one day to the next, even if I only relocate 50 to 100 yds.
Too often, the best way to completely ruin a great spot is to place a ladder stand there. Due to the convenience, it will nearly always get overhunted, and the area around it disturbed by all the comings & goings. It just takes one ole doe to detect someone's presence (see, hear, or smell you), and that "spot" has lost much of its former appeal.
The way BSK is doing ladder stands, i.e.
incredible high number of ladder stands for the acreage,
highly controlled as to when each gets hunted, and
none hunted much at all annually, may work well. But in the more typical situation, someone places a ladder stand with the best of intentions, but overlooking how that stand becomes an "invitation" to other hunters, and the collective hunting of all tend to reduce the opportunities for that spot.
There are exceptions to every generalization, especially when targeting deer over 100 yds away, and when able to come & go without alarming deer over 100 yds from a particular spot.