I'll admit, I don't like this one as much as I like your fighter, but it's come a long way since that first picture. I'm not so opposed to the "tacked on" look that a few (only a few) parts have, as this will give you natural seams to make the texturing more interesting. This shouldn't be undervalued - I have one vasudan model sitting half textured on my HDD right now which suffers badly from lack of logical places to change from typical vasudan scales, so don't get rid of too many seams.
I'm still not cray about the head shape, if I'm honest, but I do like the engine detailing, and the "ribbed" look that the front part of the rear section has - with a good UV map and texture job, this could be very cool.
As for armament, that total you have planned seems OK ithe ship is small, say, 150 odd meters long. Much bigger and you get into Mentu territory which is which is... well, woefully underarmed really - 16 turrets yes, but 10 of them are pretty useless. In any case, bigger Vasudann ship with more turrets - for a less turreted ship to have a tactical niche it needs to be smaller and quicker I would suspect.
Question though - are you a modeller only, or will you be UVing and texturing your work as well? That's the area that hangs up a lot of promising models around here, unfortunately.