Use the DAC. And if you are going to mess with GW, then you should be taking the peptides along with it to mitigate the muscle loss issues that arise from taking ampK amplifiers.
GW puts your body in a fake "starvation mode" which is great for switching to fatty acids for energy. But it also turns off muscle building and muscle preservation systems.
Adding a GH releasing protocol will help mitigate this issue.
Personally though, I wouldn't bother with GW. It's harsh stuff. Too many issues with it IMO.