Okay, not to keep dragging this out.. but I did a comparison of the ships in side views just to show a bit of the lineage.. I put in the NX, TOS, TMP, Sovereign, Soulwolf, and conjectural side view of the J (as done up on the Blender forums). The J side view in the Blender forums was built using what details could be gleaned from the limited views shown of it on Enterprise. Personally, I still see the Soulwolf as a plausible extension of the line if the development continued towards the J as shown in Enterprise.
Anyone looking to doing an "F" should consider the history of the ships, and incorporate elements for the previous ships, as well as adding something new and exciting.
I think that Chris did a fantastic job in doing that, and Tus' refit adds extra polies that smooths out some of the lower poly aspects of the original Soulwolf design and just makes it that much more plausible to me.
But YMMV, and to each their own..