mORMot Open Source

Hi,

I get new task to move one of our REST DataSnap projects from Indy components to mORMot Framework. System has Central Server which work with SQLServer Database and Client Side which send different tasks to Server and expect results. On Database All queries implemented like SQL views and all database entries (Insert/Update/Delete) realized like SQL Store Procedures. In this moment all Clients are Windows based computers but in future we expect and Cell Phones (Android, IPhone). Central server is for thousands access of concurrent users.
Now, client application connect to the Central Server and after Authentication its send different request like in this sample: function GetCountryList(regioID: integer): widestring;
Can somebody give me first initial ideas how to start. Is it better to realized Server Side from class THttpApiServer or as in Sample 4 from class TSQLHttpServer or something totally different?
Any suggestion is welcome because I don't know where to start.

Thank you in advance for any help you can provide.