Gee,
It has been so long, I did think I know how to manually load a printer driver on the OS today.
The Library and Preference to your User is undoubtedly irrelevant.
So, after selecting EPSON USB, and selecting C88, if you got it to appear as a Printer Name, you may just have to select it in that list, and then you'll be able to further select "Print Using" a particular driver if more than one if offered.
Please let us all hear how it goes.
Peace to you,
C. Livingstone