For all of your questions about rules, specifications, and other items having to do with GCW: Twilight of the Empire gameplay.
Q: When choosing Fleet Escorts as part of our starting 23 CP Fleet are we restricted to STOCK technology, or can we choose freely from fighters/auxiliary craft? eg. for Rebels, can we choose 3 X-Wing Squads? Or would we have to choose 3 Z95 squads?
A: Players get 23 CPs worth of CAPITAL SHIPS at the start of the game. Fleet Escorts are considered "bonus" so must consist of stock units.
Q: Are we allowed to use the starting 2000 KCs only for facility construction? Or can some be saved and used to manufacture other units?
A: The 2000 KCs is *recommended* to be used for facilities only, but if you want to buy units go ahead.