I am in a similar situation, but I come from the Nikon perspective. Sadly, unlike you, I have no AF capability and had to return to the developing my skills with Manual Focus.
My lens outfit consists of a 20mm f/2.8 Nikon, the 28-70mm Sony FE lens, and a 100-300 AF APO Minolta lens which is used with the LA-EA4 adapter. The two non FE mount lenses are optically excellent and the only thing I miss is the stabilization for the 100-300mm zoom. The tele zoom tends to remain at home unless I know I will be doing animal photography.
This is a pretty good light weight outfit that covers all the focal lengths that I typically use. Having said that, I have started adding the a77 body to the kit. When I use that with the 100-300 mm zoom it has an effective view of a 150-450 full frame telephoto and I regain my stabilization. Plus, I don't have to swap lenses while in the field.
I have used some moderate prime telephoto lenses, but the kit zoom covers and wide-angle prime are my most used lenses.