A couple of other thoughts, i appreciate it might be difficult to move the tormek but hopefully you have some help.
You already have a sharpening station, have you tried a tormek on it and seen roughly how much lower it needs to be to make it comfortable?
Also i have a nest of coffee tables which are all different heights but big enough to use a tormek on and wondered if you have anything like that you could experiment with?
Or if they are too low, try putting it on another chair seat, and adjust the working height by building it up with magazines.
I find it best to experiment with a mock up and the tormek doesnt need to be running so doesnt need water in the trough but that way you should be able to find your ideal working height based on your chair and your back height.
You already have a sharpening station, have you tried a tormek on it and seen roughly how much lower it needs to be to make it comfortable?
Also i have a nest of coffee tables which are all different heights but big enough to use a tormek on and wondered if you have anything like that you could experiment with?
Or if they are too low, try putting it on another chair seat, and adjust the working height by building it up with magazines.
I find it best to experiment with a mock up and the tormek doesnt need to be running so doesnt need water in the trough but that way you should be able to find your ideal working height based on your chair and your back height.