[UConnJulie]

I totally agree with everything Ian said above ... with the additional recommendation to really work on your body mechanics ... learn to separate hip and lower back movements (so that your lower back is not moving every time you move your hips). Most back injuries are aggravated more by daily movements like bending over to brush your teeth and sitting in poor posture moreso than the lifting you are doing.

And just my opinion, but your program could use a little variety ... that's an awful lot of squatting which puts a large compressive force through your spine (ie BAD for disk problems) ...