Hello there! Its possible to edit the application itself so you can have the lower font follow the steps below.
first close the write app completely ( click the apple icon select force quit then from the force quit menu quit out of write)
Click on Finder ( or anywhere on your desktop), and then press Command-Shift-G, or select Go then go To Folder… from the Go menu.
then copy and past this in
look for the name of fonts ( like helvetica ) and look for a number next it ( should be 12)
Change the number 12 to the number 8.
Then close the editor and select to save the file.