Ready for soil?

I have this lovely clipping from my local library. I was wondering is she is ready to be transferred to soil. I plan on doing a well draining mixture of fox farms, charcoal, and orchid bark. Maybe some perlite. Also, any advice on the second leaf? It's been like that since I propped it from the library; I have trying to gradually expose it to more time in bright indirect light. At the library it was in an eastern facing window but had two walls of glass (foyer approximately 10 feet from reaching the plant) and this cutting was facing away from the window.