Hey Joey,
If you feel that you this is the best way to do it, then you should proceed. I don't know what kind of a relationship you have with your brother, but I would imagine he would appreciate hearing it from you directly. Most siblings would like that you feel close and comfortable enough to directly share this with them. Still, I don't know how close you are or if he tends to get angry easily. So, your way might be the best for your particular situation.
Do you think there would be a problem telling him face to face?