AKOG you seem pretty set on going through with the S4 but i'd advise against it. It's still suppressive and will interrupt the homeostasis of your HPTA. While you may see some gains i doubt it'll be worth the risk or even significantly more effective than peptides.
The decision is up to you but i'm in the same boat and did my research on SARMs and came to the conclusion it wasn't worth it and have continued on the path of waiting a while longer before cycling properly.