How do you plan your CI applications?

[eluser]Dam1an[/eluser]

how do you arrive at figuring out those controllers?

With certain application, I sometimes find it easier to work backwards, and start with the database schema.
This gives me a series of 'object' tables and a set of many to many relationship tables... I will then typically have one controllers and model per main object table

This is often an easier approach with database/data heavy sites IMO