4/3 sensor for portraits and events, as assignment... I'm impressed! I chicked out then first OM-D came...
"just looking for better bokeh, fast shutter for quick moving kids, low light capabilities, i am coming from a dslr so maybe you are right and should look into better glass".
First, are the kids from the Incredibles for real? I took kids photos for years. And still taking... None of them are fast moving, even 28 YO.
Low light capabilities is very simple, the bigger sensor is the less noise on higher ISO is. And it has to be as modern as possible. If possible
I recently compared first 6D and first A7 (they are near at the price and still available new). 6D is the winner from ISO6400. I didn't check latest Sony sensors, because their price is behind of reasonable for me and I'm not impressed with Sony lenses and for Sony lenses at all.
Where are very well established, patriarh photographers who switched to Fuji and finding it good enough. And Fuji makes great lenses, IMO, as well. Like 35 1.4. I spend days looking at images taken with this lens.
I would suggest Fuji X Pro 2. It has not so old sensor and it has optical viewfinder in the corner. This is what I like with kids, events or just to guff around. My face and my eye are open. With VF in the middle I'm limited and with EVF is is even more distracting with fast moving things. I have to focus on the screen first to see if camera is actually focusing
Sorry to have some fun here. But it is real blessing to be able to use small camera and lenses for assignments. And it is cool.