Straight off the bat, you are a little young to be using steroids. I started just over a year ago but was already big (6'5" and something like 260lbs). Trained since I was about 15 and only considered taking steroids 10 years later as I couldn't seem to break the barrier.
This forum is jam packed full of people who know what they are talking about. I'm somewhat of a novice in regards to actually using steroids. But I've spent hours and hours and hours going through threads on here educating myself. There's a hell of a lot to learn and it's an extremely interesting and enjoyable journey.
Dylan has unknowingly taught me a lot. He has a lot of videos on YouTube where he talks about various steroids. Additionally, evolutionary.org is a separate site, that links in nicely to elitefitness that is full of articles that are there for our benefit. I highly recommend that you check out Dylan's videos and articles on evo.
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I know what it's like to want to get big quick. I had a pretty tough injury when I was younger and lost a lot of size and I wanted to use steroids to bring myself back up to where I was after I had recovered. But was advised to steer clear of them and wait until I was older (among other reasons). My honest advice is that you should wait for a couple of years, train naturally, eat a ton, use supplements if you need to, then when you get to 25 and your hormone production begins to drop, then contemplate using AAS.
If you don't want to take that advice, then that's absolutely fine. But if this is your first cycle (which I'm assuming it is) then don't add deca or dbol. Just run a simple Test E cycle. Using multiple compounds on a first cycle is a bad idea because if you react badly, you'll have no idea what compound is causing you the problems.