I’d do either 1 or 3 depending on how much money you have to spend (option 1 is $350… option 3 is $2500. Ouch). Only you can answer that question. Option 3 is clearly superior, since you could route announcements to specific zones depending on ST Modes, etc. (i.e. don’t announce door openings in the kids bedrooms at night).
Remember that the Sonos Connect and Connect Amp both only take analog stereo input. If you want surround sound in your home theater integrated into Sonos, you have to buy a Playbar.