I am short and I would prefer to have my machine in a lower position. I think the "rule" would be to sit in the chair that you choose, place your feet on the floor, and they should be flat, then the machine should be in line with your elbows. Put your arms in a position where you are bending the elbow, with your hands reaching out. Now the machine should be the right height so it does not put pressure on your shoulders or back. I believe those doctors who studied this position also
prefer it. I would recommend an office chair with a good back and seat. Some are less then $50 and you can adjust the height. It is a good investment. Good luck in your move and setting up your room. Send us pics.