Nice, whenever you see complaints about needing a bigger desk for these, consider first if it would work better with a better aftermarket mount like this than the standard stand.
I don't think most people consider aftermarket stands like this, so bravo to you OP. I am waiting for a mount with caster wheels for my own LG 48C1 that will sit under/behind my desk.
Not sure what your setup looks like, but you could consider something like this. . We have something similar for just whenever we want to watch TV outside. We have a pretty lightweight, not very expensive TV on one and we just move it outside when we want to use it outside.
I’m having the same problem right now. Just got a standing table two days ago. It feels sturdy but my monitors still shakes which hurts my eyes a lot.
You could try adding a crossbar support to your table. This video explains it really well.Top 3 Causes of Standing Desk Wobble and How You Can Avoid It
However, adding crossbar to my table is not an option because it's gonna be too close to my shins. So, I'm thinking either getting a wall mount or go ham and get a TV stand, attach a monitor arm then modify it to offsets the center of gravity.
How about starting with this TV stand, attach your F100A arm and use this monitor arm with a sandbag as a counterweight. You may need a bit of space for this. Otherwise, you could try modding the base instead. Offset pole
Hope this help. Staring at shaking monitors is no joke. I'll try with mine as well.
Good luck op