15% bf is actually quite high, you should aim for around 10% as a maximum for bulking. . You respond better with less BF.

SUST 250 and DECA every 4 days is hardly anything. Not sure what your starting point was and how much training you had under you though.

I personally would do the following:

1) Cut from 15% to 10%. It's simply too high for my liking. Use the classic TEST/MAST/TREN combo. I don't like your BF with how you write eat clean etc... if you eat clean.. you wouldn't be 15%. You are simply eating too much, not training enough to utilise the calories, or your drugs are garbage.
2) Take SUST / TEST E @ 4ml/week + DECA @ 3ml / week + DBOL 40-50mg/day. Then introduce EQ at 3ml/week as you progress. There isn't many fancy things you can do. Everything is classical. You could add HGH and insulin, but you don't need it and it will be dangerous with your level of experience.