Dynamics 365 and Global Admin access from o365 .

Hello All Experts,

I need to do folder level tracking POC and to do that i need to do server side synchronization.

I am able to select server side synchronization for my emailbox, but i need to do approve email and test the mailbox.

But to Approve email i need to have Global Admin Role and it's mandatory as suggested by Microsoft.

But as we know Global Admin is the highest Role in o365.

I need to know what are pros and cons when Global Admin Role is assigned to me.

from internal of the CRM and outside of the CRM.