Use Meg's Quik Clay, as it's an excellent all round product. The three stage system is okay, but it's more of a beginners thing - you can achieve better results by using better individual products; the third stage (the wax) in particular, is poor compared to what else is available.

Depending on how soon you need them, i may be able to supply some of those products soon. The Meg's you can get from a decent Meg's supplier, and the others you can find on the net

HTH

Gareth