Hi all,
Apologies for the number of questions, I’m part the way through my hzerller based (RPIZ2W, AdaFruit triple bonnet) project and since I’m including power management (balances lipo+psu), accelerometer\fuel gauge, and the lack of availability of some boards (specifically the AdaFruit triple bonnet) it just makes more sense to out-source the design of the PCB hub for what I’m doing.
Anyway I’ve tried to design the circuit, but tripping over the passives, I’ve come to the conclusion I can’t do this myself, but if successful the end result would be a board that I can drop the Pi into, connect the battery, psu, and panels and it’ll be more assembling rather than soldering olympics.
It’s not a trivial specification I do understand, but am curious if any has done something complex like this, whether fiverr is the nightmare it’s starting to feel like 
Thanks guys, this forum has been such help, hopefully I can give back.
Ross