Another possibility is to have two (smaller) desks side by side, one at sitting height and one at standing height. Use a wireless keyboard, or one with a long enough cable, that you can easily move it between tables. Mount the screen on an arm that is mounted between the two desks, swivels left-right and is long enough to reach the center point of each desk.
Another possibility is to have two (smaller) desks side by side, one at sitting height and one at standing height. Use a wireless keyboard, or one with a long enough cable, that you can easily move it between tables. Mount the screen on an arm that is mounted between the two desks, swivels left-right and is long enough to reach the center point of each desk.