If you are looking to bulk go 12 weeks on the deca same with the test. The deca won't kick in until week 4 so you will only have 5 good weeks when you could have 8. My friend just did that and he got huge. If you have blood pressure problems you may not want to use the dbol because it really elavates mine. You may not react the same but most people get the red face indicative of high BP when on dbol. Maybe prop instead. Just a suggestion though.