I think we waited too long to ship our initial prototype to customers, but a big part of that was that we were pretty sloppy in our product management at that stage of the company (I think we had closed the A about a year ago, and did not yet have our first dedicated PM), and our technical rewrite was also partially a feature and UX rewrite. It's been several years since, and we have clawed our way out of that hole, and I think our delivery process is actually in a really good place now.
If I were to give advice to people looking at adopting new languages, I would say to get it into production ASAP. I believe the keyword to search for is the "tracer bullet pattern". One of my favorite blog posts on this is https://blog.thepete.net/blog/2019/10/04/hello-production/
