Thanks for your feedback!
I won't be miking the whole kit, but rather one or two drums at a time. It should be said that this wasn't the initial purpose of the rack and it is still not supposed to be solely a drum mangler, but rather a external sound processor for live sound and/or samples. What sparked the idea of using Ears for this purpose was this demo:
However If the contact mic+drum thing doesn't work we'll try something else and save that idea for later and then I will definitely consider getting a Kong!