The best and cheapest way is to source a PCM already flashed with the options you have. Find somebody who can flash it to the correct operating system and VIN for your car. When you receive it read the tune, license and tune it.
All the options shall be already flashed to the PCM because any OS changes will need to spend credits to re-license. Some things can't be changed in the tune, they are hard coded in the OS that's why it's so important to start with the correct OS.