Its now almost 3 years, when I last worked on CIN. Still, I like to try my best to assist you.
First of all, I can't understand, why you need, a new org structure or new Doc type to capture the deemed export process, Why is can't be captured in existing sales process?
As I remember, critical part of Deemed export is to
- capture Licence details on delivery doc and
- creation of ARE doc
that makes this business scenario different normal excise sales.
Thanks, JP