I'd say its not bad but one thing though:
Deflector spam
Yes, i know i'm not a referrence in ship making but still there's too much modules, for this "ship size" you could put 2 or 3 modules max...
The weapons are less spamming but the "bay" definitively could say bye-bye to half of its guns...
And do you know you can change the stats of your modules so they can repair/reload faster ?
Just go in EDIT or EDIT2 and play around to make yourself an idea of what makes what...
But i'd say there's a good beginning but still needs a LOT of improvement...
They are rather skinny

...
And the engine in the rear of the Avenger just look ridiculous, try to beef it up a bit like 1 or 2 sections...