From our experience pedestals only really cool the grain & don't dry it. 2% reduction in moisture would be great if only it was true! Unless we are doing something wrong.
I must be doing something wrong too then.
Good to keep 17/18% grain sweet for a month or two until you can get it to the drier though.
They are more for cooling than drying IMO - never really dried with them but you can get heaters fur the fans that I'm sure would help along with some smart fan control via rh and temp sensors