Ciao! And yes, we were thinking about some isotermic cells like these http://www.cellafrigo.com/cella-frigor-usata
I contacted some of them and i guess a bulk order can give us a 10 feets cell for less than 1000 euro and hopefully up to 10 miners.
It's a serious matter tho...
Any specific skill you may have? Also, you can PM me for further details (in italiano ) if your location is near Rome (or not) we might meet as well.
~RR