RE: How much is too much on one stand?
I always remind myself that every time I go to my treestand, I am leaving scent behind.
A mature, adult buck will realize that real quick. He'll know when you entered and left and from which direction.
If I washunting a big old buck that I knew lived in that area, I would let it quiet down for a few days.
Overhunting HIM is the worse thing you can do.
If you are still seeing lots of deer and decide to take a doe or smaller buck, then go get 'em.
Good luck!