The original design layout wasn't well thought out.  I am currently working to put XT-30 board mount connectors on the top and bottom of the board on the same side edge.  They will be offset so that in between their connections the system FETs will fit.  The JST XH connector will be near them as well as a small SMBUS connector and the USB Type-C will be on the opposite side.

I may experiment with swapping the XH connector to something smaller as it really is the biggest connector on the board.  There are many more compact connectors that can support balancing.