Go is an extremely strange choice, given the ecosystem you're targeting. I've got quite a bit of experience in it, TS, Rust and C++. I'd pick any of those for productivity and (in the case of C++ and Rust, thread-safety) over Go, simply because Go's type system is so impoverished.

From a performance perspective, I'd expect C++ and Rust to be much easier targets too, since I've seen quite a few industrial Go services be rewritten in C++/Rust after they fail to meet runtime performance / operability targets.

Wasn't there a recent study from Google that came to the same conclusion? (They see improved productivity for Go with junior programmers that don't understand static typing, but then they can never actually stabilize the resulting codebase.)