Suggestion Needed to Move Several Objects ( Logic only)

HI

I am in process of creating a mobile game where I need to move many object at the same time.

Background:

1. I touch one OBJECT_1 and Drag it to a position(vector2 position)

2. ON_FINGER_UP , Object start moving towards the position(vector2 position)

3. While OBJECT_1 is still moving I moved OBJECT_2, and it started moving as well.

I have several object which a user can move with finger (players). Along with some automated moving objects on a certain path (enemies)

Motion is not Physics based i am using following :

 transform.position = Vector2.Lerp(transform.position, distPoint, Time.deltaTime * speed);

To make objects move I have 2 approaches

Approach 1

1. Create a MonoBehaviour Script (with my motion functions)

2. Attach the Script to all Moving Objects That I want to move,

3. ON_FINGER_UP, Send message to Object to start moving ClickedObject.SendMessage("moveStart",V2coordinates, SendMessageOptions.DontRequireReceiver)

4. update() will wait for moveStart Flag , and once moveStart Flag received, then

5. update() I keep moving my object.

6. Once Object reached destination, moveStart Flag is set false,

Approach 2

1. Create a MotionManager Empty Game Object

2. Attach MotionManager Script (with my motion functions)

3. ON_FINGER_UP, GetComponent< MotionManager >() and call a function void MoveObject(GameObject Object2Move, List MotionPath, float speed)

4. Function MoveObject can move the objects using 2 approached

a. Start a new Co-routine ( StartCoroutine())

b. Use the update() function and move the object ( this option seems no good, as this will be moving objects one by one and I have 15+ objects moving, so first object will have to wait for all objects to move )

I need your advice what approach should I adopt for a better performance in terms of mobile resources utilization,