Hello RickI,
Aboards told me that you had a few question's, so here i am
Yes i did kite a few time in the start of the vallée Blanche, a place named "col du midi", just under l'aiguille, it's a nice place, really big, wind are not to good like you said..., S-E winds work's good (coming from Helbronner).
I Kited to up la mer de glace (just on top of the cave) up to "la vallée noir and vallée Blanche", but same story with the wind...
Hope to see you kiting in Cham on day A+