Hi Vijay,
Good Day!
I am not that much expert in SAP BW. However I have search some good article to refer and let me know whether its useful. Thanks.
Best Practices for SAP HANA Data Loads:
http://scn.sap.com/community/hana-in-memory/blog/2013/04/08/best-practices-for-sap-hana-data-loads
Licensing, Sizing and Architecting BW on HANA:
You will also get more suggestion from other SCN Members too. All the best.
Also I suggest you to search some blogs posted by John Appleby.
Regards,
Hari Suseelan