i will use the power bank when using the shoulder rig, so no problems with weight.
good you mentionned the ronin as i have a moza air 2 and it is possible to connect the gimball to the camera, the only problem is that they do not provide the small cable
so do you have any link to a very short mini usb to usb c cable ? all i find on amazon is at least 50cm and i need something like 20cm
edit: my bad, just found some, just needed the right keywords
https://www.amazon.fr/Openii-dextension-MacBook-Chromebook-appareils/dp/B07FC69S5N/ref=sr_1_4?ie=UTF8&qid=1551698248&sr=8-4&keywords=cable+micro+usb+usb+c+court
edit again, not the right cable, it is micro usb to c instead of mini to c