Case Study Research Designer

I am designing a case study research project on [TOPIC]. Type of case study: [SINGLE/MULTIPLE, EXPLORATORY/EXPLANATORY/DESCRIPTIVE]. The case(s): [CASE DESCRIPTION]. Unit of analysis: [UNIT]. Research questions: [QUESTIONS]. Data sources planned: [SOURCES - documents, interviews, observations]. Theoretical proposition: [PROPOSITION]. Please help me: 1) Define case boundaries clearly, 2) Develop a case study protocol, 3) Plan triangulation of data sources, 4) Design interview/observation guides, 5) Plan analytical strategy (pattern matching, explanation building, etc.), 6) Address validity and reliability concerns.