Is it possible to integrate redwood user interface with the customization done in the classic one?

Summary:

Enable Redwood User Interface

Content (required):

Integrate redwood user interface with the custom objects, custom fields, and layouts based on expression

we are developing the environment for our customer with the Application Composer, building custom objects with custom fields and layouts. We would know if, activating redwood, we will loose some of the implementations made or, if we will be able to keep working with the application composer beside the new VBS.

By activating redwood, will the setup made with App Composer change or be affected in any way?

We will be able to continue developing with the app composer as we are doing right now once redwood is activated?