For info you'd have to contact Helix but the link below will give you there full catalogue. 200mm racing clutches are on page 28+
www.shonx.ru/download/Helix/Racing%20clutches.pdf
No, capacity I meant how much torque the clutch is rated to handle. Perhaps the wrong term to use but the catalogue will explain.
Paddle clutches are more grabby i.e. more on/off in engagement and do not like to or tollerate to be slipped much. They require a different driving style and for a road car an organic plate is much more forgiving. As i said, you'll find a 6-paddle less 'harsh' than a 3 or 4 paddle but it will still probably be a bit of a pita in traffic. Incidentally replacement friction plates are not too dear anyway, encase you get fed up with it.