If at all possible, place the sewing machines on the same table, with some space to work on the right (or left, if you are left handed) for your blocks. Make your space to the right to be a combination cutting-ironing station so that you only have to swivel around to press, or to cut. I did not notice your chair, but if you can get a swivel office chair so that you do not have to move, it will work better. Place your threads near the sewing area (on the wall just in front of the machines, if you can. The more you can place everything you need for each job(cutting, sewing, etc.) the better off you will be.