I like the ship a lot.
I am using gatflak on right side, and banshee on lower left.
Hullgineer will shot the banshee when he can, having an easy trifecta while aiming on the second rail point from the center.
Haven't really used the top and top left guns.
I am using the ship by assigning the gunner on top deck, and each engineer to a lower wing, keeping gatflak primary guns on the right side, since balloon is less critical
I am having a good success with this loadout, mostly ignoring ballon in favor of flak fire, and using drogue chute to prevent fast sinking.
I think the pilot on this ship is what really decides the outcome of a fight. Many times i have 1v1'd other mobulae and found myself at their back 10 seconds after an initial frontal engagement.