Sorry to dig up this old topic.
Did you get this setup to work for you Shalloy?
I've finally got around to getting a fridge for my beer. I've just started a stilton style cheese yesterday, and am preparing my setup in the fridge.
I've got an external thermostat controlling the fridge, which is set to 12.5C, and will them have the cheese in a large plastic tub so I can increase the humidity by adding a pot of water etc.
Currently recording the temp in the box I'm getting a fairly stable temp around 13C and a humidity level of around 98%. I need to take out the pot of water in the box, as the RH seems a touch high!
I'm hoping that by the time the cheese is ready to go in the cave, I'll have got the RH under control.