Sure, a low ENY would be fine. OBJ should also be very low.
As to the Tiffie, well, the Mossie is almost as fast down low, tougher and has more ammo for its quad 20mm cannons, so I don't think it is the cannons that get the Tiffie perked in there.
Good point, but you add the other attributes t0 the typhy along with the cannons and you get the high perk.
