I wanna use gw-501516 to keep fat off while I do slin,but....

I dont wannna go hypo due to GW burning all the calories.
Is GW inactive after a certain time? Id like to use in morning due to slin being used early evening,or insulin am and gw pm?

any advise? Im kinda leaning towards doing both separate. Just thought maybe someone thought it would be okay once slin ran its course.