Are these sentences OK?

I called a restaurant, etc. for a take-out order.

If I say;
I'm here to pick up my take-out order.
or
I've come to pick up my take-out order.

Question

Are these sentences OK?

I called a restaurant, etc. for a take-out order.

If I say;
I'm here to pick up my take-out order.
or
I've come to pick up my take-out order.

Answer

They are correct but it is not necessary to say 'take-out'. 'Pick up' already means that you are here to collect something and take it away from that place. It is repetitive so it sounds a little unnatural.

Answer

Yes! Both are correct, and little formal but good to use.