I don't think you really need to worry about all that right now, you don't have a sticking point in reality its just lack of speed off the chest and technique. Those are good movements but you would benefit most of all from:
Gaining weight/muscle mass
refining bench form
training with higher frequency or volume
What does a week of benching look like for you? Like number of times you bench, reps x sets, what assistance work do you do?
EDIT: to answer your question though, yes you would do movements like that after you complete your bench working sets.