I think you have made the right choice.
FYI, the charging board you have now can probably be set to 100mA charging current by replacing the resistor. You will need to be skilled in soldering surface mount components.
Please refer to the following link as well.
XIAO_nRF52840 and XIAO_ESP32C3 have a built-in charging function, but since the circuit diagram was not disclosed, I assumed that they have the same circuit. I was curious and measured the charging characteristics. They are completely different, XIAO_nRF52840’s charging current can be set to 50mA or 100mA by firmware, but XIAO_ESP32C3’s is fixed and very large at 370mA, so I need to be very careful when using small capacity batteries.
[XIAO_Charge]
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