For the last six months I've been using a laptop on a kitchen table as my primary computer. I did hook in a monitor, keyboard and mouse but it was less than ideal especially for doing long projects so I decided to upgrade my set up.
I've used sit-stand desks before. I had a Varidesk that I bought at NVIDIA which I really liked. My personal habit is to stand for light tasks but sit for anything that needs a lot of concentration so I need to be comfortable in either position and to be able to switch instantly.
Here's the set up I came up with:
For my new chair I bought a longer gas strut and roller blade wheels before even assembling it. Removing a gas strut from a chair as shown here requires use of a hammer and some brute force, so it's much easier to start with a new chair.
If your back hurts or your eyes or your pee pee, go see a doctor!