Connect 16S to 3x LTC3300-1

We are using LTC3300-1 in our 16S BMS design and I need some help in the verification/review of our current schematic. 

What I particularly interested in how we should connect the secondary side of the mid and top LTC ICs. Currently, it's connected in a next way:
- bottom IC connected from B- to B12 (12 cells)
- mid IC connected from B6+ to B16+ (10 cells)
- top IC connected from B12+ to B16+ (4 cells) 

Is this the best connection or should be changed? 

Thank you in advance!