Hi Tye,
The Kipper is mostly built from glass over foam, there is some carbon and kevlar reinforcement in high stress areas. I have done quite a few repairs and reinforcements while I have had the boat and I would say that it is now structurally pretty sound. I have been sailing in some big winds so it is well tested.
It has an ex RS600 carbon mast that is to the max height of the latest rules. For sails it has a big 05 rules mainsail, I said it is close to full 05 area as with the size of the jib it will be slightly under area. The slight lack of area will not make a huge difference in speed, at least compared with the difference that shiney new sails would make.
The big kite is from memory 20sqm, compared to the max 21sqm again it will not make a massive difference in speed.
The class is a development class so the rules give the maximum sail area, if you want you can race with less area, and if you are light this may be an advantage.
I have got a lot of sails and bits and peices so if you are interested it would probably be best if you gave me a call on 07943869739 and I can describe things better.