It doesn't matter what you choose for your Primary weapon or grenade.

The first should have Hardlight shield as its armor ability. The second should have Regen field. Both loadouts should have Plasma pistol as the secondary weapon, Requisition as the Tac-Pack, and Ordnance Priority as the support upgrade.

I really hope we only get 8 people so that we can use party chat. Otherwise, this is gonna suck.