Hello LindaW ...

What you are doing is a good at-home workout ... and you make GREAT use of your available equipment.

The only exercise that may be trouble is the "twisters" ... make sure that you are doing them slow (like 2 seconds to the right, then 2 seconds to the left ... going to the point of the greatest stretch on each side and hold it for a split seconds). If you are doing them fast (swiniging back and forth) you run the risk of putting too much strain on your spine and you may torque it out.

Just looking out for you ... Stay with your program and keep us posted!