Hello Ms. Levy-Peck, For practical information on social-justice based community partner coalition building, I highly recommend you read our thorough, step-by-step guide to creating and maintaining coalitions and partnerships. We also have a whole chapter devoted to the development of community health initiatives like yours, but that provides a much broader set of background information. I am not sure if we have resources specifically on tackling organizational cultural differences per-se, but we do have resources on adapting programs to different cultural contexts and on enhancing culture competence. For writing your blueprint, you might consider our guide to developing strategic and action plans. Best of luck in this endeavour.