The other free font I meant to mention wasn't Charis Sil but Sorts Mill Goudy - you can get an epub of "The Book Of Tea" here on mobileread which had embedded fonts (so will display with that font)
https://www.mobileread.com/forums/showthread.php?t=97542
shows the font and also the excellent formatting available with epub - really good looking layout with the Chapter headings, and Initial Large Cap and so on....
Well worth a look - i'm going to see if it's possible to use Fontin with the general layout.
Coops