When I came out (also FTM) to my friends, I did it in a letter. I suck when it comes to talking to people. I tried, in my letter, to make it not seem like the big thing for me that it really was - I just said that I was making some changes and now'd be a good time to start calling me $news_name and using male pronouns. I offered to point them towards some reading material if they were interested and made sure that they knew I was open to questions from them. In retrospect there are some people that I wish I had been braver about approaching and disclosing to in person, but overall, I was glad for the period in between them receiving the news and seeing me in person so that they'd have time to think about it for a while.