I am building an indoor model with my son. It is an Aerocraft Ltd Playboy cabin 200. The all up weight of this airplane is 4.7 ounces and 200 sq inches of wing area. Plans call for a, 5-gram outrunner, 4 amp bec, GWS 5x3, and 2S lipo". Trouble is that the usual vendors don't have such a tiny motor in the required 2000 KEV range. The Park 180 is close but expensive. Any ideas on where to get something like this with a prop driver?