If you are as lean as you say you are (8%), then your stats aren't bad at all. My avi pic is very close to that (178@6%) and I am the same height
Regardless, you have already made some very poor choices to start cycling so early and young. You are only 21 and already have a bunch of cycles under your belt when you should just be eating and growing naturally. Even if you decide to continue cycling, you should just forget about running Deca. That is the worst thing you could run, and you would be opening yourself up to a lot of problems