CG can and will use what they want. For those that say bounty hunters are needed and point to the scene from ESB, I have to ask where is Cad Bane as well as the ships for Dengar and 4Lom/Zuckuss? Hounds tooth is implied from the scene but wasn't in the movies or novel from what I recall.
The reality is that there is only 2 factions that has more than 4 ships in them (Rebels and Galactic Republic) that are either all light or dark side. This implies either it will need 4 or less ships to complete or will be a mixed faction, either two factions added together or one faction with mixed affiliations.
Slave 1 is part of 3 factions right now, Cargo ships, Bounty hunters and Scoundrels so I would look at them for farming, along with empire if it is from ESB