Both, the mAHr logger, I think there is scope for you supplying that, essentially I'm lazy and being able to buy the parts in one place to make what is a very useful piece of kit is what I'd prefer, but I understand the logistics of doing this.
My other interest is your new ESP32 development board, but I'd like to see the schematic before I buy, noting that if you rerlease it you run the risk of some Chinese supplier copying it as I have seen quite a few e-paper units that are clear clones of your design on Banggood less so on AliExpress,