I would leave out biggs. Slow. And his damage is not worth it. Farm rp before biggs.
The reason i would choose lumi over over jc is because lumi has one of the highest assist damage in the game. And she has a chance at blocking, which you are in huge lack of crowd control.
Plus with qgj and 86 on there, you will not have much chance to heal. You will probably not get far unless your 4 and 5 and rg and daka, too. So when GS is ready he will be the man. And you will end up cutting 86. BTDT.