The HW-609 is basically slightly larger than a MF480 designed to accept larger motors. Don't forget about the new Kokam cells either. A few have ran them in parralel packs pulling 50amps with 20+ minutes without power drop off. They're expensive though. Right now though it's very possible to make an EDF with 20+ minute flight durations.
However like was said that ships just too small to mount a Toki unit in. You need a 90mm EDF kit for a conversion. Preferably built up because in order to get the CG right you going to have to mount the Toki unit more forward that the EDF which is typically closer to the rear to offset the battery weight. Anything is possible, but that is one of the smaller sized ships.