bq77PL900 or bq76930 separate charge/discharge paths?

It is easier with the bq76930 due to the architecture.  If you split the path on the bq77PL900 the body diode of the charge FET will bias up the pack charge+ terminal and the CHG pin of the IC so that it thinks it is in a charger when it is not.  You may want a low current discharge FET in this path also, or split the path after the discharge FET:  The high current discharge path comes from the discharge FET, then goes on to the lower current charge FET.  This way the charge path also still has discharge protection.  This may be desirable if the charger can fail and load the battery.  The discharge path of course does not have charge protection.  Be sure this is acceptable in your system design.

The bq76930 can be split more easily since there is not a charge detection on the associated pins.  The path can still be split after the discharge FET so that the charge path has discharge protection.  The load detect feature on the CHG pin of the bq769x0 will not typically work with a split path. 

When using a high side switch with the bq76930, the path can typically be split also, the same considerations apply, check the selected method for current paths.  Load detect on the CHG pin will not work and an alternate method must be used.