DISCLAIMER : IT'S NOT CHEAP!!!!
Here is my Run and Gun rig with the Sony A 7 III and the MS-Schoeps CCM41_CCM8 on cinela Osix suspension and Sonosax M2D2
The camera rig is a Zacuto gunner and some home made focus pulling tools... 😉
It's 2,9kg. I can soot the whole day with it as my two hands, elbows, eye, make contact with the camera. The EVF and it's peaking infos are really good (much better than many EVF out there) and you can pull focus easily with it.
Sound from the POV of the camera si critical fro me but you can't beat a good boom and some HF. Better have a sound guy with you.
The M2D2 gives you the opportunity to have good 48v preamp and use the great MIX feature with compressor/limiter wich is great if you don't want to touch your faders during the take.