If they are that far from the wall it may be necessary to dash slightly further after 6b before 5c, for spacing reasons, the entire goal of the midscreen work is to carry them to the corner, tacking on as many hits as possible, and still have enough proration left to finish the high loop at the very least.
Try to push the opponent as far as possible whenever you have the choice. Notably after habacan Mu can do an extra dash; 66 66a before the opponent hits the ground, this is only on the optimal height however, the same you would use for 5d 214d hit.