There's no reason to stack all 3.
SD by itself is the absolute ****. Apparently you haven't run that yet, but you want to stack it with 2 other things? The more I thought about heavy oral stacks like that (3 orals) i concluded it's just not worth it for your body... Look into injectables, your stacking options are a lot better when you're using mild, long-duration compounds with no liver impact.
I suggest you try the Mdrol by itself. Tren/Phera would be a good stack for the next cycle