Are. You done in DHS for the day? I would not leave for dinner and then return. That will take a lot of time.
I always suggest that when people plan dinner they look at their park plans and work around them rather than try to add meals that are spread out all over WDW. In your case, if you want to plan AP, do it if you are leaving DHS for the day, but if you are not, choose any restaurant in the vicinity, even if you choose CS> Travel time to a resort can eat up over an hour each way, and then you still need to eat.