Thanks for the comments.

The model will be released once finished according to the deal I made with the Inferno team, 'cause I like assets to be public.
They were very cool about it too.
EDIT:
Now that I'm back from work I'll go into some details:
I'm not really a fan of the thin spikes & tails, I think they look a bit too fragile and easily-shot-off, therefore out of place on military vessel - excepting that they could be comms gear of some sort. They do add nicely to the feel of an organic-y ship (going off your drawing here, p3d doesn't work on my current PC), they make me feel like they need to move/sway when the ship's flying through space 
Well, I guess those tails could be sensors, comms or
decoy systems. I'd guess that having them swaying would be cool but it would make it look even more fragile (and I honestly wouldn't know how to make that work, although some really imaginative rotations may do the trick).
So, I'll try to make it a destroyable subobject and that's it.
Lastly, I like the name too, joy, love, motherhood, and bombs in your face for coming after my kids! 
According to the article I linked, there's a story that says that she was so furious after discovering that some men where plotting to kill Ra that she became Sekhmet (goddess of war) and massacred people around 'til Ra intervened. That's why I chose the name.

This looks fairly nice. I do think the middle section would look better in relation with the rest if it was flipped upside down. Atm, the location of engines plus the shape of the cockpit makes it look a bit imbalanced.
I tried this suggestion. I think it makes it look even more unbalanced, as it moves the mass center further down. Both the bomb tubes and the engine "nacelles" look bottom heavy already. The cockpit as it is compensates a little.