I second the others.
I would never recommend irreversible medical interventions such as initiating hormone treatment or surgery as a means of self-exploration. I would suggest that you seek out a therapist/psychologist/psychiatrist or even a GP to discuss these things with. "T" isn't just a fad drug that's going to give you only the effects you want (which I think you already know), so you really need to be sure that you are willing to take the good with the bad and live with the consequences of your decisions.
Regarding your questions:
Quote from: Patch on June 15, 2014, 11:57:55 PM1. Negative effects of T over a long period of time? I have researched a little bit but not heard a lot so I'm asking the community
Well, what do you regard to be "negative effects"? Some guys think that "too much body hair" or "going bald" are "negative effects". As for potential negative health effects, yes there can be (again...the word "potential" comes into play as there are few, if any, studies on the long-term effects of T on trans* men). Things like higher "bad" cholesterol, a greater chance of heart disease, abdominal obesity, and a condition known as polycythemia are all possibilities - but they aren't guaranteed. A healthcare professional can inform you about these risks in greater detail.
Quote from: Patch on June 15, 2014, 11:57:55 PM2. The "micro dick"/clitoris enlargement. I don't know how I feel about that it's a dick but not a dick and I guess that's what it boils down to? I just worried about this part with relationships and sensitivity?
This isn't a question really for us - it's a question for yourself. In regards to sensitivity, the overwhelming majority of guys will find that sensitivity increases with enlargement - mostly due to the fact that the head is actually rubbing against your clothing. In regards to "relationships", I don't know what you mean by that as it's a rather vague statement and has more to do with the individual person and how they process their dysphoria.
Quote from: Patch on June 15, 2014, 11:57:55 PM3. While yes I wanna be a guy, I want to look like a guy, I want my voice to be lower, etc etc. I'm worried about going over my head and making a mistake or something.
Well, your'e doing the right thing in asking questions - that's for sure. It's not a flippant decision that should ever be made on a whim. The reality is that, if you choose to start T, you may not get any of the changes you desire - you may even look more like Danny Devito than Ashton Kutcher. It happens - I have known of guys who have started T and then regretted it once they realised they weren't going to be magically transformed into the image they had of themselves in their minds. But - again, you need to talk about these things with a professional. There's only so much that anecdotal accounts can do for you.