The fonts seem the same than RUS ones (even the Gold version).
So, if your system is set to 150% dpi (144DPI), once you tried the Small fonts option in Espana36,
you can edit the Fonts120.ini file with (#font, size, bold):
#0, 5, 1
#1, 7, 0
#2, 9, 0
#3, 9, 0
#4, 5, 0
#5, 7, 1
#6, 5, 1
#7, 11, 0
#8, 7, 1
or you can download/file.php?id=33967 it...
You should too decrease the resolution of the game,
using AGESettings.exe, to make the fonts appear better.
I have a 1920x1080 monitor, but I play in 1600x900.
RUS thread where this comes from: viewtopic.php?f=289&t=39820