interesting thread and I do understand why you upgraded, makes sense. Yes, I was and still am interested in the 8-25 and 12-100. It is the range of those lenses along with the quality that appealed to me. Trust me, the lenses I want seem to change by the hour.
I had thought about going the Sony APS-C route. I have given all the lenses you mentioned a lot of thought and have owned them at one time or another. I just keep going back to my experience with the G9 and how much I enjoyed it. I probably will have another sleepless night rethinking my lenses. I know it has worked out kind of strange that I did not get any of the gear I mentioned in my first post.
I have just seen your post about placing the order. I hope it will work out for you. If you are comfortable with the G9 and enjoy using it, it might be the most important point after all. I have tested the G9 four years ago, but it was too bulky and conspicuous for me. I didn't even like the ergonomics too much (e.g. the Canon-esque front dial behind the shutter button and the placement of the joystick right next to the EVF). But a lot people seem to love the G9, so it might work for you as well. On the other hand, If I needed to chose from the current MFT lineups, I'd probably go with the Olympus E-M5 III, which you didn't like

It suits me much more with its compact nature and classic design. I'd probably chose the 8-25mm/4 and either the 12-100mm/4 or 12-200mm lenses with it. But then I'd also need something brighter, which would bring me back to the same conundrum I escaped from ;-)
As for Sony APS-C, I'd simply go for A6600+18-135mm+Tamron 11-20mm/2.8. I could add the new Sigma 18-50mm/2.8 as well. That would downsize my current setup quite nicely, with not that much of a sacrifice. F2.8 on APS-C is just about good enough for me.
I have always enjoyed shooting with a long tele zoom. Anything similar to the Pany 100-300 or Oly 75-300 are much larger and far more expensive in full frame. Even compared to the Sony 75-350 the MFT lenses are smaller and cheaper, that has always been a draw for me. The range of the 8-25 is rare and either I will eventually get it or I still may get it instead of the 7-14. I did love the 12-100. I chose the Pany 12-60 because the kit price was attractive with the G9. If I did not get the 100-300 then I probably would have gotten the 12-100.
I don't really understand why you even consider the 7-14mm/4. It's a cheaply built lens from 2009 with no weather sealing and restricted range, which is not even that compact due to the bulbous front element. In comparison, the Olympus 8-25mm/4 is a brand new lens with very high build quality and weather sealing, much longer reach, similar size and not that much higher price. I'd go for the 8-25mm/4 100 times out of 100 attempts, with the Panasonic 8-18mm/2.8-4 being a second possible contender.
Yes, the price of the 12-60mm in the kit (Leica version, I guess), is much more reasonable than the stand-alone cost of the 12-100mm. So it's a great choice, if you can sacrifice the reach, its also significantly more compact. But I don't think it's correct to say it will still give you more reach than the Sony 24-105/4, as it is more appropriate to compare it in APS-C crop mode, which gives you 160mm equivalent.
The reason I went from MFT back to full frame is because of wanting that one large print in my living room. I admit I was drawn to the fact that APS-C lenses work well in crop mode. What started to happen is I started to get very uncomfortable thinking about taking so much expensive gear just for the very rare moment of getting a shot for my very large print. All the other reasons for keeping a7r4 don't mean much.
I can acknowledge that this factor did not even occur to me at the beginning. As for me, I am more uncomfortable traveling with a large and conspicuous camera, like the G9, than a more discrete setup, even if more expensive. But I can now appreciate your point of view as well.
I will make a large print before I leave on my big Europe trip in June. If am happy with the quality, then I sell my a7r4. If I am not, I may get the Olympus EM1 3 and play with the HHHR mode. I will hang on to my a7r4 for a little while to use for sports (I use the 17-70 and 70-180 Tamrons in crop mode) and use my MFT for the majority of times when I just want to share photos on my website.
Gary