I disagree with TexasOrtho. At the most competitive schools you need to start looking into setting up your aways as early as February, especially if you are looking at the months of June/July. I did three aways and although I was beaten up by the end I would encourage doing three. No matter how good your application is, your best shot of getting in somewhere is at an institution where you rotated (unless you are a tool in which case do not rotate anywhere).
Howzit