There are a few of us with bipolar children here. There are also people who don't believe in childhood bipolar. It's very tough because this is virtually a "newly emerging" diagnosis. Professionals agree that it is not appropriately covered in the DSM IV but it will be addressed in the new one.
My ds (age 6 1/2) is also newly diagnosed, and I am working with two different parties on treatment options. One party is his psychiatrist, who is quite conservative, and the other party is the clinical studies people at Mass General, who are generally perceived to be aggressive. I intend to take both sides into account and decide from there. I've been dragging my feet a little because I am very afraid of the medications for such a little boy. However, DS suffered from a psychotic episode yesterday, which was probably more scary than the medications. I'm still processing, but it was very, very scary.
I want to offer you all my support. I have some idea of the terrible time you have been through to arrive at this diagnosis. Be strong for your little one. The CABF website can offer lots of support, however there is a fee to join and it can be pretty overwhelming to hear what other families are going through. But I have found that dealing with mental illness is so isolating, that we absolutely need all the support we can get. Best of luck to you.