I did WC6 on Thursday - not too bad a course. Too steep bits, each about 3k in length with gradients up to 12% (although mostly 7-9%). If you can get into a group to draft, should be good for a fast time. I chose ghost that were slower than me so didn't get the chance to draft that much.I would also, but if no ne says otherwise, I think I'll go for the WC stage 6. Looks like a toughie.