Keep it simple -- don't bother with the proof set up for now. Just go to Print with Preview and set print to "Document". Options should be: Color Handling, Let Photoshop determine colors; Printer Profile, Pro38 PLPP; Rendering Intent, either perceptual or Relative Colorimetric with BP compensation.
Then select printer and printer set up, make absolutely sure all color management is turned OFF in the Epson print driver dialog, proper paper, size and feed source are selected, select desired print resolution but none of the other "options". Forget the Epson preview as it isn't accurate anyway and just hit ok all the way out to the first screen and then hit print. You done.