It turns out that there are two drivers for Windows as there are for Mac. I've downloaded the "Series" driver and it does, in fact, have a setting for each of the epson fine art papers, Hot Press Bright in particular.
After some consternation with the driver telling me that it is recommended that Hot Press Bright be fed thru the front manual tray, I found the driver will accept a roll paper setting that it just overrode.
I fail to understand why Epson has two drivers for each system and it tries to force the front manual feed, but I think that I now have it working to my satisfaction.
Thanks, Mark, for your presence and persistence in this matter.
Alan
You are welcome. Yes, there are two drivers for each OS: Airprint and Series. Unless one is very attentive when setting up the printer, by default the Airprint driver gets installed, which has a very limited range of settings useful for printing from mobile devices. Epson should amend this; most people buying a printer like this would want the Series driver. The driver installation should either install both at the same time and advise users which to select for what purpose, or install the Series driver by default and let people know they can use Airprint for mobile devices. More people, including myself very early on, have been hung-up by this "de-faulty" behaviour.
As for the FFA feed, yes for sheet paper, those heavy papers should be fed through the FFA. According to Epson this is better for the longevity of the feed mechanisms. BUT, this does not apply for roll paper, where you simply follow their instructions for the roll paper path.