I've just taken delivery of a 200mm Skywatcher newt OTA

for the purpose of Astrophotography, having been inspired by the quality Eric and Barb&Dave were getting using newt/MPCC combinations. My question, is do I need anything other than the MPCC (e.g. extra spacer rings) before attaching my 20D. The MPCC can be purchased as a kit with extra rigs etc so I may be better off getting the kit if extras are needed. I already have a T ring and 2 inch camera adapter.
My thanks to Andrews Comms for doing a visual inspection of the OTA before sending.