Hi! Do not do another front-end! Use ours, here it is (with some additional code, we should move to separate repos soon): https://github.com/luna/luna-studio

It would benefit both worlds - you start with something working and well designed and if you improve it in any way, we would be happy to have your contributions :)

Regarding business model - everything is free. We will provide some paid hosting solutions in the future / paid libraries for very specific domain use cases.