If you want to shop by voice, then Echo is the obvious choice. You can use "Alexa, where's my stuff" to get a delivery update. Android is no problem of course (Fire tablets are Android) and Google Calendar is supported for both Personal and GSuite accounts. Google Home on the other hand, only supports personal Google accounts at this time.
Again, if this is your first Echo, get the Echo Plus for the very nice volume knob on top or at least an Echo 2 for the better sound vs. a Dot. I know you say you're not using it for music, buy you may find that it's just easier and so you will use if for music more than expected, and then you'll be glad you have the larger speaker and volume knob.
But buy a Google Mini too! 
They're great for announcements by way of Google Assistant Relay and custom tones via the cast function. Also if you have a Google Cast compatible TV or a Google Cast attached to your TV, you can do the cool stuff they show you in the promo video.
