I totally agree with the artificial gravity thing - it does seem too advanced for the late 21st century. My problem was with the fact that I really wanted to put a deflector dish into the design, just because it looked cool. So if there is a forcefield technology already on the ship pushing space dust out of the way, why wouldn't there be artificial gravity pushing crew to the floor?That's a great looking ship. I love it. Though personally, I date the invention of artificial gravity to much later. So I prefer seeing the decks in the other orientation for ships of this era.
My compromise is to have gravity only on the deck with the ring of big windows (on the same level as the deflector dish). This keeps all 'experimental' forcefield technology in a localised environment during an era when Earth isn't capable of full artificial gravity.
It's a bit of a logical fudge, but I can live with it if it means I can keep the deflector. :P