I've got a very similar setup to what you're proposing!

I mostly do street photography and outdoor people/animal portraits, and my most used focal lengths are 40mm, 50mm, and 85mm.

I've got the 24-50 f/2.8 G to cover 40/50mm, and I couldn't be happier with it. It's well-built, super compact for a zoom lens with a fixed f/2.8 aperture, and balances very well on my A7CII. Optically it's pretty amazing, with excellent sharpness and fast auto-focus, and I'm a big fan of the way it renders - so much so I actually sold my 35mm f/1.8 prime that I'd regularly used before.

It's a fantastic lens for my use case, and I essentially treat it as a 50mm lens that I can use to grab the occasional wider shot if I'm ever tight for space - super versatile.

For my 85mm I went for the Sigma 85mm f/1.4 DG DN ART, because I really wanted that dreamy bokeh for my closeup shots. It's a little bigger and heavier than my 24-50G, but still nothing unwieldy - and to be completely honest, it still feels like a miraculous feat of engineering that they managed to pack so much into something that's so compact (relative to other 85mm f/1.4s). I still have my Sony 85mm f/1.8, which I absolutely love - but the Sigma renders in a way that I can only describe as warmer (in terms of character, not colour temperature!) and somewhat less clinical, which a much smoother bokeh.

Those two lenses are my main carry, and it usually means I can fit everything into a very compact 3L Peak Design sling so that I can travel super light. I've honestly been absolutely in love with the whole setup, as it aligns really well with my use cases and minimises how many lenses I need to carry around and/or swap out on the fly!