No, because the console in your home will be set to one other person, and you can sign in as yourself - that's access to 2 people's games, not more.
Maybe EA access that can get you their games, which include FIFA (checking it, it seems you can get FIFA 17, but you'd have to pay for FIFA 18...
This is how it works:
People set their Xbox as their home console. Instead of setting your home console to being your home console, your friend signs in instead, and sets it to their home console. You then do the same on their Xbox - sign in and set it to be your home console. That's it.
The way...
You don't need the extra storage for any particular game. The extra storage is so that you can have more games stored at the same time. The main questions are how many games he's likely to need installed at the same time, and whether you'll get games on disc or digitally (more on that later).
Is...