Just make sure that you really think this through. Remember they all will shun you for good. Compare that feeling against the feeling you have of "always having to look over your shoulder" and people nagging you about the meetings. It may seem nice to be "free" but free is really a state of mind. Because you are already free. The people who go to the Kingdom Hall and are believers in what the Governing Body says are not free. But you don't believe all that now already. So you are already free. So, can you live with yourself and just be able to simply and politely turn down the requests to go to the hall?
Think about. How different would it really be than if you never were a witness? They would be asking you to go to the hall just like they are now, right? Right. So if you never were a witness, never had that belief system, then you could just simply say no thank you and move on with your day. Well, you are actually in a very similar situation now. Maybe show up to the Memorial, just like a worldly person does annually, to make the family happy, and you're good for another year. And you get to keep all the friends that YOU like. And all the JW snobs that you don't, forget them. Just like in the world.
So keep the best of both worlds, if you choose to. Just something to consider.