More deets please.
What speed will your fiber be?
What's the network topology? (ie, when you say router, do you mean a second router after the ISP's provided router? Or does the ISP not provide a router?)
What physical interface will the fiber have? (coax or ethernet)
What do you mean by 5G?
Is this specifically for wireless?

I am the Doctor, and THIS... is my SPOON!