More bodies or more gear?

Hi fellow hive scum,

I'm fairly new to the game, so I wanted some advice. I'm running an Orlock Gang in a dominion campaign and in the last game I got a lot of creds (220 to be exact), so I was wondering what I should spend them on. I started by buying armoured undersuits for the leader and sarge, but I was wondering if maybe hiring an additional champ is a better idea.

My current arms master is a beast with his arc hammer + mesh armour + armoured undersuit + recently upgraded Toughness. I still have 155 creds to spend, so I was wondering about either a new melee arms master or ranged sarge.

Gang composition for reference:

• Road Captain with boltgun and servoclaw,
• Road Sergeant with combat shotgun and chainsword,
• Arms Master with arc hammer,
• Specialist with grenade launcher,
• Wrecker with chainsword and autopistol,
• Wrecker with stub gun and knife,
• Gunner with shotgun,
• Gunner with autogun,
• Greenhorn with stub gun and maul.

The leader and champs also have mesh + undersuits.

Does it even make sense to add a new guy or should I focus on equipping the guys I already have?