Question about Wrappler and Custom CMS

I am a Webflow user looking at Wrappler. I can code and design, but like the speed and convenience of visual design tools. My issue with Webflow is the CMS is weak and I want to use my own. If I export I can do it, but I can no longer edit the site.

With Wrappler, can I add my CMS code (ExpressionEngine) direct in Wrappler? I know it won’t render I assume, but can I add the CMS code, export and then go back in again to make design changes? Anyone use a CMS with Wrappler for client sites? What is best workflow?

Is the code editor able to do this? Any way to preview the site in Laravel Valet or other tool to see it working with CMS?