^That's an interesting take on it. The "teardrop" is a clever idea, and it would cut down on the need for storage space in DEWLine's deck plans. I think your version of the dimensions works pretty well; I still think DEWLine's version is too stretched-out.
I think I'd like to see the nacelles mounted lower, though, so they wouldn't look as Starfleety. In general, the forward silhouette should be as compact as possible. Also I wouldn't mind having the front be a little bit more pyramidal to give it an "obelisk" look fitting the name.
Alright, here's a second version, emphasizing the obelisk look. The hull originally looked more like Cleopatra's Needles, but that was too boring, so I stretched out the sides, turning the cross section into a slight hexagon, and left the warp engines to (again) pick up the design.