Glen, I've found the trick seems to be very good polar alignment. If I take my time with the drift alignment I'm able to guide the C8 sufficiently well. I even had the C11 guiding well at SPSP, but I never bought that scope with the intent of imaging with it! This is all on my EQ6 and its included tripod btw.
You might want to think about putting some lunar lander feet on to the end of the tripod legs though as I've found the standard tripod can sink in to the ground over the course of a couple of days on less than hard ground. The difference is small, but noticeable at the longer focal lengths.
Another area to focus on is balance. Any imbalance is all the more noticeable at 2m or so.
Other than that, you guide long subs already, it's all well trodden ground for you...I'd say you're good to go
