I've had many models of Dynaudio speakers, though I have knowledge of your amp so I can't comment on how well they'd work together. Dynaudio speakers, especially the older models you refer to, want an amp with a lot of power and current.
I owned the 3.0's and I would not recommend them from a distance of 7 feet. The 2.8's are well regarded (haven't heard them myself) and have a higher quality tweeter than the 3.0 or 3.3. If you have access to a pair of 2.8's, my guess is that they would work well. Personally, even though it wouldn't save space or money, if you can swing the C1's, that would be my clear choice, and one that I think you'd find the most satisfying.