I would take a look at your warmups.

I would suggest something more like this...

Use an example working weight of 225lbs:

bar 2x5
135lbs x 5
165lbs x 3
185lbs x 2
205lbs x 1
225lbs 5x5

I think you'll find you have alot more energy left when you get to your work sets.

Everything else looks great. You doing Starting Strength then?

IronWorker