With Principality fixtures against Maesteg next Wednesday and Pontypool the following Saturday, Cardiff have three fixtures in a week and Stone admits he has to spread his player resources carefully.
He said: "With a fixture backlog building up, we have to be very careful that we don't overplay some players. At the same time we are taking the cup run very seriously. Our victories so far have served as the perfect tonic and we want to go all the way to the Millennium Stadium for the final in May."
In earlier rounds Cardiff have won at Laugharne, Tonmawr and Bonymaen. The team for Saturday will be selected from:
Backs: Leon Andrews, Elgan Jones, Jonathan Hill, Nick Gill, Dafydd Hewitt, Richard Davies, Richard Jones, Chris Anderson, Nick Macleod, A N Other
Forwards: Rhys Gill, Geraint Morris, Nathan Trevett, Kris Kinsey, Michael Leaman, Khalid Jama, Rob Meredith, Chris Jones, Chris Stamatakis, Nick Hampson, Mark Lewis, James Malpas, Gareth Gravell