Originally Posted by mememarathon
I personally pair my A7R2 with a Ricoh GR as it suits my travel and documentary style of photography.
You did mention that you wish to use the same lenses, so I suppose the obvious option is using the a6000/a6300 bodies since they share the same mount and the same batteries. AF and IBIS on the a6300 should make it quite a bit more versatile than the original A7R.
The other option would be to spring for the latest RX100m5. You get a blazing fast pocket camera with a bright 24-70 equivalent zoom. The only limitation would be the small 1" sensor size - which might not cut it if you are used to (and/or require) the high resolution output of the A7R. Question is - do you print large sizes or are most of your images digital-only?
I do make large prints (on metal) and have the A7R (and D800e) for that.
I'd like to be able to produce large prints from the 2nd body as well, although I can work around that if it has compelling features (e.g., excellent video, should I decide to get into that).
What I envision is a two-body kit, one with an AF lens and the other with an adapted lens. Given that, both the A6300 (or the a6500 due next month) would be suitable, as well as the RX100 M5.