You don't want to lower the test dose when you add deca and deca is a long ester. It isn't going to begin really working for 3-4 wks, so you want to run it for at least 8-10 wks or more. Also, deca will shut you down harder than other steroids. If you are not on HRT, I would suggest you go in another direction or at least use some HCG on cycle to help recovery. At your age, it can be harder to recover test levels than a kid in his 20's. Also, with dbol, EOD will do very little to nothing. I don't suggest high doses, especially for a first timer, but 1 tab (dont know the dose you're taking about 10mg? 50mg?) and you'd be better off using this at the start of the cycle while you wait the few wks it takes for your test to kick in. 

Lets just start fresh and let me show you a more standard way of using these compounds to get the most out them and I am going to include doses. On the deca, I'm keeping it very low, just to help with joints and tendons, giving you some cushion. If you want, you can do this same cycle, leaving the deca out and you will still do great!

1-12

Test e 500mg EW

adex .5mg EOD

HCG 250-500IU 2x wk

1-10

Deca 200-300mg EW (really dont "need" this one)

1-4

dbol 25mg ED