Beautiful town bike Jack with lots of original thinking evident.
Ideally it would have a brazed in kickstand plate abaft the bottom bracket. Sometimes these can replace the chainstay bridge.
Failing that you are into some creative engineering.
This bike calls out for a DOUBLE kickstand - ultimate in retro
http://www.velo-orange.com/
and then throw away the top piece and see what you can creatively machine / fabricate with rubber inserts so you don't unduly mar the frame or bruise the wine.
Good luck with it
Mark Petry
Bainbridge Island, WA