Scenario regarding Sales Organization, distribution channel

Dear Experts,

I am doing

1. Simple Domestic sales from manufacturing plant

2. Depot Sales: In which, Stock transfer between two plants i.e. from Manufacturing Plant to Depot and sales from depot

3. Exports: Sales to other country.

Now, my confusion is, whether i can use a single sales organization and three distribution channel for all these three scenarios or do i have to create three different sales organizations along with three distribution channels and do the processes?

My anather question is, if i want to do depot sales, then it is possible to have one manufacturing plant and two storage locations at different places. i.e. issuing storage locatin and receiving storage location.

Is it possible to sell goods from receiving storage location to end customer?

What will be simple organizational structure i can make to acheive these things?

I would be very helpful if you can give me your expert inputs on the scenario. I am trying to make the simple organization structure with less complications for my client.

Thank you

Amit