Thanks, that's great to hear!
1) Yes, we plan to build SDKs in more languages. But you can still use the GraphQL endpoint today from any language / codebase with type-safety using GraphQL codegen tools.
2) Yes, the language is powerful enough for basic code and it sounds like your use case will work. We made the language total for safety reasons so you don't end up with any accidental infinite loops. It's actually pretty simple for us to make the language Turing-complete — we'd just need to allow recursive functions.
It'd be great to jump on a call to discuss your use case more! You can email me at miraan at hypertune.com or click the book demo link on the home page.