For now single featured images need to be resized individually: https://docs.generatepress.com/article/page-header-image/
Although global resizing options are on my list to do.
Getting that kind of layout would take some considerable custom programming I’m afraid which is a little out of the scope of this forum.
This function exists which moves the categories and tags up under the title: https://gist.github.com/generatepress/c25f5fad1f646ef5eea3
Then you can target the categories with this CSS:
.cat-links a {}
However that won’t be exactly what you’re looking for.