That's the one I've been working on now.
For what it's worth, your design with the circular nacelles has inspired me as well.
Actually, I woke up one night in the middle of the night a few nights ago after staying out all night, bolted upright in bed, and had to root around in a frenzy looking for a piece of paper - ANY piece of paper - to jot down some sketches before the ideas drifted away.
I saw my own version of a circular nacelle ship (with my own stylistic preferences for thinner, more wispy shapes, naturally) in nearly completed form. And as I said, the circular nacelles suggest some serious space-and-mind-warping action going on there - but 2D static drawings don't convey it well. I need to learn how to do 3D models and animations.
As soon as I pull the sketches together into something that conveys what I'm going for, I'll post it. Thanks for the inspiration!