Mike-
I'd think though that you would want some vertical bracing further back though. If this is your fully planked wing, did you find that the curved skin made up for this?
FWIW, I found that my "New Millenium" wing came out light and very rigid, with added bracing - probably too rigid, since it suffered grievous damage in mild impact with terra firma. This was my structure, using open bays.
SK