Question on upgrading hardware box after 4years!

Just helping a friend out —— his company opted for FG200E in 2018. They are now looking to upgrade to FG200F or FG201F as they have grown to more people.

Is it too soon to upgrade? It’s been 4 years. How would you make a decision on moving to FG200F or 201F? These are expensive boxes. Is there a way to get more juice out of FG200E?

What does one do with the box purchased in 2018? They are pretty expensive and I thought that I’ll have his questions put here….thanks for your help in advance!