It's great to see an update on your space battleship, artoor and it looks like it's close to the finish.
Go for it! The more swept back fins the better. Don't forget raking the superstructure.
Raking? Sorry , I don't get it 
I think he means placing the superstructure leaning back (or forward) at an angle. I don't know if that's a possibility at this stage, but if so, it would give it a faster, more streamlined look.
Regardless, I think this one is going to be a stunner!
Brian da Basher