A bit late, but last haat I ran almost that team, only CLS instead of Biggs. I imagine it would be about the same. Only real benefit is CLS gives a bit extra TM..
Solo, CLS at G12, Wedge G11, Ezra G10 and Leia G9
Everyone survived fine until enrage, did about 5M damage. Wedge and Leia was often on yellow health after post topple attacks, but gained the health back quickly enough to never feel very dangerous. Wedges Leadership gives some nice synergy with the multi-attackers Ezra, Leia and Solo. Lots of bonus TM and Heals.