Kostya, if you experience dizziness/vertigo etc. with EVF-only cameras, the X100 makes sense as a light do-it-all family cam, as does the slightly heavier X-Pro. With the X-Pro, too, your M lenses add another option (for even if you disdain the 1.5 crop, in practice it can augment at 28/50/75 what you can do in film at 21/35/50).
ZM 50 1.5
Serenar 100 3.5
The original X models grow ever more affordable. I picked up an X-Pro for $325 a few months ago as a partner for my X-E1.
Luckily I have no trouble with EVF, so the A7 is my current FF solution.
OM Zuiko 85/2
You might find it too fussy to mount optical viewfinders in the shoe for legacy lenses, but if you are (as I imagine from your FSU film practice) comfortable with zone focus/aperture, this can work. Yet if you can afford an M8 with your current sell-off plan, you can also afford an A7 with its 35 2.8 or 55 1.8--and then you could mount an optical VF while using AF.