i would do some internal and external shoulder rotation movements with bands. i do them everytime i lift because my shoulders suck. ive dislocated my left twice and have torn tendons in my right twice, resulting in one surgery. go on youtube and look up kelly starrett shoulder mobility. theres tons of stretches and band stuff. and if you decide to do some lat raises and inverted flys, do like 2 sets with 30 reps, so it will be really light weight you're using. superdtv3000 on youtube has some shoulder stuff too.