I have Gravity Forms Elite and need a second license for a new site. But, our needs will likely not be as diverse. 1) Will Basic send to an email address of my choosing that is not my WP Admin email address? Can Basic send to different email addresses based on a field (i.e. Subject)? 3) Under Settings > Confirmations, does Basic have access to the “Redirect Query String” redirect option?
The Basic license has all those features. All licenses have those features. You can also use your Elite license there if you like - there’s no need for another license. If you want a separate license for the site for some other reason, you can certainly buy one.