We would like to develop a script similar to the one used in
 
http://www.roofray.com/calculator

Summary of features   :
User enters address
User can see his home on gmap / centers it 
User inputs various data in local energy costs etc.
User can use measuring/drawing tool to measure surface and make different quotations based on surface and other information
User receives various system generated quotes based on installed surface 
User can see financial simulator that he can adapt with various input / options 
User can select quotation and apply for financing (form)
System mixes with geomap weather data (sun maps) and local electrical cost information 
Sales can import user inputs in CRM for detailed quote
Script should be flexible to be integrated in websites and possibly later FB app  in widget or iphone app 

Please quote for a completely operational system 
(see integration by http://www.sungevity.com/home-solar-systems/solar-systems-installation-demo )

Please advise similar examples