Level of customisation?

My client really likes the style of the Pinnacle theme but unfortunately I’m finding the home page in particular more restrictive than expected. Some issues that spring to mind:

1. Is there any way to make the flex slider look the same as the ‘page title’ option? In particular, increase the width to full screen width, and have the caption text higher up on the screen? If not, is it possible to use something like Revolution Slider instead of the built in home slider?

2. From the demo I assumed that I’d be able to create multiple custom subsections, but it appears that the content is restricted to the five content/layout combinations defined in the theme options section. Is there a way to, for instance, add a standard page content section using the Gutenberg/Kadence blocks system to create the layout? Or maybe add my own custom sections to the theme options?

3. In the worst case scenario I could build a home page from scratch, but changing the home page in the ‘settings’ section didn’t seem to have any effect. Am I missing something here, or is the home page hardcoded into the theme? Would I be better off creating a child theme and adapting the home page code directly?

Thanks in advance for any advice!