Stick with the amount it takes to work and have a strong effect without going over the top. If you had a headache and 2 Asprin cured it, what would be the benefit of taking 4 or 6 asprin? It would just serve to create more potential side effects. A cycle doesn't have to be hard on the body. You can run a good, clean cycle with low sides and great gains. The more simple you keep it, the more you'll be able to focus on the factors that will make you grow, diet, training and rest. If you are prone to progesterone sides, deca may have a negative impact on you. A safer bet might be EQ. My cycle suggestion would look like this :
1-16
Test E or Cyp 500mg
EQ 400mg
adex .25mg to .5mg EOD, as needed to control Estrogen
1-6
Dbol 30mg ED
PCT would start about 3 wks after last injection. If you want to better ensure your recovery through the cycle, you can use HCG at 250IU 2x wk through the cycle, and stop taking it a few days before PCT starts