Hi Seifty
 

I sent you a PM. Hope that helps give you some informed insight. I would highly suggest another ADR than a cage. A cage is very ridged and cannot be easily removed later. I would be concerned with it putting more stress on the M6-C below.
Dr. Schmitz can use a CP-ESP which would also provides a more controlled cushioning like the M6 but with less over engineering. I have become less of a fan of more than two levels with the M6 for this reason.