For points you could remove the stealth suits was well or knock them down a little.
Stealth suits against Orks are one of our best weapons. Bad idea.
Personally, I would drop the MT's from the 'fish, and use the points elsewhere. Whoop-de-do, you get 3 shots more shots moving 12". The points can be better used elsewhere.
Everything else looks decent, though the three FB & Flamer squad worries me slightly. How're you planning on deploying them? DS? To deploy them effectively, you risk a bad mishap, and unless they're very well supported by the rest of your army, they'll die next turn, due to being so close.
They're usable, but that'll be a risky tactic indeed.
Another weapon you seem to have forgotten would be the oh-so-coveted Hammerhead. I have -no- idea where you would find the points, as this list seems pretty minimalist already, but the Hammerhead is a source of major anti-infantry and anti-tank in the form of the railgun and pie plate. Just something else to consider.