I have not read all the posts so this may have been mentioned. You hunt as high as the background cover dictates. There is no advantage to climbing extra high. In fact, it makes the shot angle much more difficult.
I have been bowhunting since 1961. During that period, I estimate I have killed about 300 deer with a bow. I do not have a stand over 18-feet and most as 10-15 feet high. My best one, a ladder stand, is 10-feet high. To date, in 9-years, I have killed 25-deer from it.
Just climb what the cover dictates.