Former baseball slugger Mo Vaughn plans to build market-rate apartments in Miami’s Edgewater neighborhood, marking a shift for his company that has so far focused on affordable housing. Vaughn’s Omni New York, through an affiliate, paid $7.2 million for the development site at 116 Northeast 24th Street, according to records. Seller Carrera Family Investments is led by Jose and Zaraida Carrera, state records show. Zoning for the 0.7-acre site allows for up to eight stories