The part that makes it so tough is monitor arms come in standard sizes and are nowhere near long enough or extend far enough for me to sit comfortably. My dad modified my desk for me years ago to mount a monitor arm on wooden blocks, but it means I can't move the monitor much.
Being able to wear glasses and ditch the monitor entirely would be a game changer for me. I know next to nothing about AR though, being as I assumed, perhaps wrongly, it isn't something that would work for me.
Edit: Thank you for the replies. It means a lot. I've got some options to explore here now thanks to you.
Google for "long reach" monitor arms; some models have a reach of 30 to 40+ inches. They're not exactly cheap since they come from ergonomics vendors but they allow you to bring a large monitor as close to your face as you like and, depending on the model, clamp to a table like a standard monitor arm. I've had various models of them for a couple of decades now.
https://i.imgur.com/mjcqjfZ.jpeg
I use my 4K TV as a monitor (though from ~8ft away) and for me Windows' scaling (found under Display in Control Panel) allow me to easily read text from so far away
Maybe it could help you
A monitor arm of the right length and height lets you sit so that the monitor is close to your face, floating at or beyond the front edge of the table, and the keyboard is physically behind the monitor, letting your arms be in a more natural position for typing.