Motor for Ultimate

[CWH]

I am researching motors in the 400 to 500 watt range for this bipe, can anyone steer me to a good quality BL in that range? Here is the bipe I am buying.
http://www.rcplanebuilder.com/rc-plane-kits-plans/hacker-3d-aerobatic/ultimate-biplane-1000mm

CWH