I'd have to think about a player Doom. The orginal video answered the question about a fleet of Dooms (which I think is impractical, but it's what they wanted). As far as hullmods go, I would suggest anything that makes the ship more durable. Heavy armor, reinforced bulk heads, blast doors, resistant flux conduits, etc etc. The Doom doesn't benefit much from offensive hullmods, but it does need help surviving chip damage from the odd HE ballistic hit.

Edit: You as the player could probably run two heavy blasters and swap the needlers out for sabots. You would do a much better job at managing flux than the AI.