Hi Sweath,
While changing career/domain it is always a risk but it should be calculated risk. Do some research with friends/recruiters about the module that is in demand in SAP and then take decision. HANA is the new in-memory database from SAP, it is hot and many people are looking for training on HANA, in future HANA will be in high demand so a combination of BI+HANA will be good. Don't quit your current job till you get a job in SAP as many people quit and then suffer and have to wait for a long time.
If you feel you got some useful information from me then rate it accordingly.
Good Luck.
Nagarajan Viswanathan