Andy, your current thinking is similar to what I have.
Skywatcher 10" F4 CF quattro. 2.5" Moonlite, QSI683 wsg-8 with unmounted filters, MPCCIII and a Loadstar for company. Mine is on an AZ-EQ6.
Field of view is 1.03 x 0.77 degrees at 1.11"/pixel.
May I suggest you select the scope and camera in a field of view calculator, say
http://www.skyatnightmagazine.com/as...iew-calculator and check out what you get for a number of objects.
You commented on my slightly cropped Lagoon image from a few weeks ago to give a feel of what this is solution is capable of.
This is getting close to the maximum load for this size mount. Your not going to squeeze into a 12" or a 10" RC without guiding suffering.