I have a query regarding the VXRail initial setup.

I have 3 x E560F servers, which comes with 4x10G SFP+ connectivity. 

During the initial setup, Is it possible for me to configure the VXRail with 2x10GSFP+ . And later on configure the unused 2x10G SFP+ dedicated for VM traffic?

Any issues in the above configuration. Is this a good practice.