Since your goal is MASSSSSS, like you say..then I would feed the Dieselbolan, it likes to be fed, once you feed it with a clean high protein/carb diet, you will get your gains in mass and that totally depends on your food intake, workouts, lots of water, and pleanty of rest (sleep).
Use a liver protection ED while you start this from start to finish on your cycle. Throw in some cranberry juice, no sugars or junk food. Soild wholesome foods.
At the 4th week, start on the Beast at 20mg ED , then last 3 weeks from there you can do 20-30mg ED. Your choice.Add in some Taurine and lots of water intake, for possible sides like lower back pumps and thats really all of the sides, honestly. HAve ALL of your PCT in place and I would also add HCGenerate if you can get ahold of some from needtobuildmuscle.com. from PRE-CYCLE all the way to the end of your cycle into PCT.
Here is the Dosage I would do at a safe cycle:
Dieselbolan 1-4 weeks - 30mgs ED
Beastdrol 4th - 8th week - 20 mgs ED
note: for a experienced user on Beast, I suggest 30 mgs ED and no more!!!!!!
I hope this helps you, I have taken the superdrol twice with only lower back pumps and great gains. Diesel, once with wet gains, little bloat good mass. Peace...........