You just need to wrap your form component, which is also tied to redux-form, with a container component and pass your initial data as prop to child component. It is not that complicated.
I mad bunch of changes in a fork and was about to submit pr then you changed your project structure or made it private, and I got 404. now all gone. I will see what I can do. I still have the forked version, maybe I can create a gist or smething