How do you think you would feel about 65" vs 55"? I've been using dual 39" 4k monitors (no longer available on the market), and when I replace them I want to g

How do you think you would feel about 65" vs 55"? I've been using dual 39" 4k monitors (no longer available on the market), and when I replace them I want to go to a single 55" or 65". The current area in square inches is almost identical to a single 55", so at 65" I think I need to lower the screen in order to have full visibility.