Played a Demo Game at Zulu's board game café in Bothell, WA today. even though I lost I was ready to play again right after. we used 2 starter sets.

2 speeder bikes and 2 squads of Storm Troopers vs 2 Rebel Squads and 1 AT RT. we skipped using Vader and Luke to keep it simple and because even with 2 starters there was not enough dice for some of what they could do.

so I suggest you have 9 of each Dice ( 1starter and 2 dice packs or 2 starters and 1 dice pack).

I could be wrong, but I think the maximum amount of dice that can be used at once so far would be 12 for the flamethrower.