I know very little about Kyle Rayner myself, but I have a friend who plays him and another pair of friends who REALLY know their DCU and one of them REALLY KNOWS HIS LANTERNS cause he's a derp over all things Lantern.

I could hook you up if you're interested in talking to them for some resources/pointers? They are wicked nice peeps and the people who introduced ME into DC comics in a gentle but totally enabling way. =D