netsuite

I am building a module which does provides a basic integration of a drupal site with netsuite crm(for a client). I am planning to implement tasks such as
1.) creating leads,prospects, customers.
2.) adding users as sales reps.
3.) assigning sales reps.
4.) notifications with emails about new leads for follow up.
5.) creating activites.
6.) create roles types based on netsuite.
I will make use cases once I get around the PHPToolkit that netsuite provides for the developers. I would be very happy if anyone would want to chip with their ideas and experiences with netsuite or in general.