moca setup with old box

I have an old premier 4 sitting in the closet, I run a romaino 4 tuner as my dvr and a mini in the bedroom. Trying to setup moca network and I noticed that the premier runs moca out of the box.

So I would like to do the following:

Setup old premier 4 as the moca network setup. Then connect my romaino DVR and tivo mini to the moca network. Is this possible or will I have to activate the premier first?