From your comments depending on how low maintaintance your other website is... you can probably host it via cloudflare pages and connect your domain to it.

https://pages.cloudflare.com/

https://truecharts.org/manual/SCALE/guides/getting-started#adding-truecharts

You can try the truecharts variant instead and enable the codeserver addon to access the apps files in a web editor.

So after its active you would go to (replace with your scaleIP) http://truenas.local:36107/?folder=/app/config

Just edit there watch the Changes happen in real time.