you don't only want to work the rotator cuffs, but also the surrounding muscles which are also often neglected or imbalanced as well. i always do a number of exercises before get to my worksets when i press.
some great suggestions
1. cuban press
2. cuban press while leaning at a 45degree angle
3. scapular retractions
4. frontal raises thumb up or pinkie up
5. lateral raises thumb up or pinkie up
6. face pulls, focusing on the scapula retraction
7. arm circles with a small/small plate. i use 2.5# and maybe 5#. side. behind. above. front. handdown.
8. hammer swing(this is done with a plate, try 25#, hold at eye level, rotate so one elbow goes down and the othe other up as you bring the plate around your head to your ear, then behind, then to the other ear, try it, you'll feel how it loads your entrie shoulder joint through various angles)