replace analog with digital thermostat

first post here.



i have an electric radiant heated floor in my bathroom, installed when the house was built in 2006. there is an Infloor analog thermostat in place (part #29004 <a href="http://www.infloor.com/catalog/products/thermostats.htm">http://www.infloor.com/catalog/products/thermostats.htm</a>), but I'd like to replace it with a digital programmable model (possibly #29050).



Couple quick questions regarding this situation. How difficult would it be to snake the new floor sensor down under the floor? Would any brand of programmable thermostat work, or should I stick with Infloor? Any further recommendations are welcome, this is a gift to my wife so she can have warm floors this winter.