Here is what I used
Battery
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=15002
ESC http://www.hobbyking.com/hobbyking/store/__12189__TURNIGY_TRUST_70A_SBEC_Brushless_Speed_Controller.html
BEC http://www.snhobbies.com/product_info.php?products_id=2231&osCsid=9dbc815bafd1a14b1eaa8445dc0c616d