Hi there - in the initial part of an SCA build for a client and as part of which they require quite a bit of Content Managed through the CMS tools. Is there a way of moving this data type across when we move to live?

No, CMS content need to be manually moved into their prod environment. There is not an automated way to move this content

I tried doing this once without going through CMS and it wound up taking longer than a grunt work copy/paste session using the CMS tools.