This is a really interesting concept and the work you and your organization is doing is really impressive and much needed. To address some of your challenged perhaps you could seek to partner/collaborate with other programs related to education, and the psycho-social concerns you mentioned. There could be opportunities for resource and knowledge sharing. In terms of additional teacher support perhaps there would be ways to engage other teachers-in-training who may need site experience; or community members who could get involved, depending on what makes sense given the context and what is available.
Looking forward to seeing how your efforts evolve and wishing you all the very best of luck!