I've been on medication for hypothyroidism for 14 years. My metabolism wavers at best and I struggle with weight loss and muscle gain. I've also got a few nagging injuries. Looking to take a stack that will help boost my metabolism, increase fat loss, strength and injury recovery. From what I've read, the following is what I've narrowed it down to. Looking for some advice/opinion on these including dosage and frequency. I would also like some info on the recommended PCT to follow up.

GW-501516 (Cardarine)
SR-9009 (Stenabolic)
MK-677