Hi Dave,
(Late) answer to those couple of questions you raised..
for a deep wide arch wing, will the vacuum bag be able to pull the carbon into all the cornersetc or is there a way I can stick all the kevlar in place before I bag?
The vacuum bag should never be relied on to pull the reinforcement into the corners - this is a recipe for bridging problems. Spray adhesives are the way to do it in this case, prior to bagging. This is an ongoing saga at the moment but contact me when you're ordering and I'll talk you through the latest news/best options.
Best regards, Matt