Hi Varun,
The suitable module for you is SAP Sales and Distribution and SAP CRM Sales or Marketing because Sales knowledge can give wide understanding how SAP process works in industries.
My best suggestion would be opt for SAP CRM because there are thousands of people already have average experience of 5 to 10 years in SAP SD module.
If you are entering in SAP SD module then he will have more struggle before you enter and after you enter for at least 5 years.
Industry counts experience however still SAP leads ERP world but SAP CRM picking up after advanced UI technology and more robust functions for many SAP industry applications.
Regards
RC Gopi