I think a good flat building surface is the most important thing.
Balsa dust gives my sinuses fits. So I bevel like this. I mark a center line with a pen like Minn does. Then with a straight edge I mark another line 1/8" back from the LE on each side of the stock. (If you want more bevel you can do 1/4" back or whatever you need) Then with a razor plane I plane down each side to the line I drew. Then a little sanding with a T bar evens it all up. This is much faster and cleaner then sanding it all the way down. I have glued tri stock to the LE like someone else mentioned. This works fine just be careful not to get the hard tri stock. It makes it difficult to hinge.

David