Hey bro
No real need for the clen for anti-catabolic effect. If you want to use it for fat burning though, go for it. 3 wks isn't going to make a huge differnece though. I prefer to use it longer term, like 8 wks or more, starting at 40mcg and increaing by 20mcg every couple of wks, going no higher than 120mcg. As for HCG, I would run it on cycle at 250iu 2x wk, but since you are coming to the end of your cycle, you can still make use of it. I would take larger shots, around 1000iu every 3 days for the last few wks, before you start PCT. For PCT, I would wait 3 wks from your last shot of sust and primo. Then start Clomid at 100mg ED for 7 days. Then 14 more days at 50mg