Cousins hits pause button on sale of part of downtown's 191 Peachtree tower

As an office market, downtown Atlanta hasn't been as hot as Midtown, Buckhead or the central Perimeter over the past decade. Lately, however, downtown is creating a lot of buzz about its tourism industry, new apartment projects and investment in incubator space. That momentum is spreading to the office market. Late last year, Cousins Properties Inc. (NYSE: CUZ) was exploring a joint-venture on its 191 Peachtree tower, and technically the Atlanta real estate company didn't take the option of selling…