Hi,
I had the original bars with variobar risers, I had to get longer brake lines but the cables were ok.
After an accident last year I fitted renthal bars, medium road I think they are and I had to remove the bar risers as the cables were far too tight. You maybe lucky, but if the bike still has the original brake lines, it may well be worth getting longer/braided ones anyway? If you say you are a member of the FOC then HEL give you a decent discount, I think I got nearly 25%.