Usually a combination of Vengeances and Debs is good on most ships using Liberty Tech.
It has a good damage ratio and a good speed.
Still, I never piloted a Mafic.
Also, while powerful and energy efficient (They got one of the lowest power per second ratio of all class 9 guns) they are slow as hell so they are easier to dodge.
Missiles like a paralyser and a canonball for the two gun slots can be a good idea since its a slow ship. But more will be frowned upon.