As you have done MBA in Finance and now turn to you career in SAP, recommended that you go for SAP Financial. The SAP FI Module has the capability of meeting all the accounting and financial needs of an organization. The real-time functionality of the SAP modules allows for better decision making and strategic planning. The FI (Financial Accounting) Module integrates with other SAP Modules such as MM PP, SD & PM. The career growth is obviously high. For best info go here: Career prospects for SAP FI/CO consultant.
And for institution. it is not possible to provide any name from here. If u stay there, better you consult with your closed persons or consult with a renowned SAP consultancy. But of course you do, from a renowned Institutions that has value and future employers can consider your certs.
Hope it helps you!