I want to but my husband thinks it's a waste of money when we already have 4 dots
I don't think it is a waste of money.
1. you can call any landline or mobile phone
2. you can have it call a business without the number being in your contact list
3. you can get better answers to stupid questions
4. you can use it as a backup when the echo is acting up
5. there is casting if you stream
and more.
as far as setting up the google skill you originally wanted. there are several posts in this forum that has links to help with it. there are several youtube videos that can help. just search for "google skill for alexa"