Bonus-
It could take months and months and months to get a larger system operational. It all depends on how quickly they can install radios, do electrical upgrades if necessary for the dispatch centers, install new dispatch consoles, do firmware upgrades once the system is installed, integrate software from other vendors (such as dispatch software), train users, program subscriber radios, and drive test for coverage guarantees.
In some cases it could take years. In Mint Hill's case, probably 6 to 8 months.