Rotator Cuff Injury

I had a rotator cuff injury last year. It wasn't major but I did about 5 weeks of PT, finished it last November. It's continued to get better over the last few months and I pretty much have full range of motion but still get occasional twinges of pain with certain movements, specifically straight overhead. I am interested in trying this type of workout to try and improve the mobility in my shoulder and increase strength. Would this be a good workout to try and achieve this? If so, any advice or tips would be great. 35 years old, so not young man anymore but I ain't old yet either! Thanks!