Sylentthat's the proper way to sit if you don't want long term issues
Yeah, i've tried doing this now, i needed to put 4 books under my monitor for it to be at the proper height, but my arms are too high and too close to my body for comfortable aiming, my mouse and keyboard would have to be too close and i wouldn't have enough space for mouse movement, because my elbows are closer to themselves. That position sounds good for office people that use much higher sensitivities and use a keyboard more than a mouse, but I still prefer having my chair lower to have my elbows wider apart.
https://i.imgur.com/eCiKwu0.png