Looks pretty decent to me. My only issue is if you are aiming to maximize your strength on the big lifts, do them first. From my experience, the best strength gains are when you focus on the heavy lifting as the first exercise. Just make sure you warm up well.
I know if i did reverse hypers before deadlifts, my back would gas out quickly. Try doing some slow and steady good mornings with just the bar before deadlifts and squats. Knees bent and just slow and controlled, focus on stretching and squeezing, don't tax the muscles. This makes a big difference in the stability of my trunk and warms up my hamstrings.
Also, there is no reason to try 1RM unless you are interested in competing in power lifting. I never go below 3-4 reps.
Either way, let us know how it goes.