Welcome Lavafish [John]...Glad to have you here.
We live in the Northern US and have lots of Chokecherries around here....It makes our very favorite wine...we do ours dry...everyone has different tastes.
They make some coffee flavorings that come in bottles....they are sweet, Chocolate, almond etc......You might try some of that in your wine when serving and see if you like it. I see them at Sam's Club...maybe even WalMart would have them too.
I have been making Chokecherry pancake syrup and been putting some almond extract [for cooking] in it and it tastes great....Bet Chocolate would be good in that too.
Let us know how this turns out for you.