plugs,wires and coils dont cause oil loss. Niether would a torn intake boot. If the valve seals or guides were leaking you would have smoking after initial start up and then it would clear up. You probably have leaking oil rings. Check the spark plugs for oil deposits.
I work at a Mazda dealer and Mazda doesnt even sell a clutch kit. You have to get the pressure plate, disc, and bearing separately. If it was a kit it was probably aftermarket and it will feel different than oem.