This is an incredible project and the impact that it could have is tremendous and far-reaching. As an immigrant myself, I certainly believe that this proposal could address many of the needs of your audience and could forever change their lives. These educational resources are very well thought-out and you have clearly considered your stakeholders. Given the times which we are in, this proposal is even more important.
While I am not an expert in this field, I think you bring up some very interesting questions in how to grow this project. Regarding your second question, I believe it would be beneficial to partner with organizations focusing on similar causes for refugees. These organizations may have existing stakeholders which could increase awareness of Regain Education and provide you with other opportunities to learn and grow.