Plantraco micro RC and Guillows 500 kits

[Ta152]

Has anyone out there used the Plantraco Mini RC gear in a 500 series kit? They have a small 7mm geared motor that might pull a very lightly built 500 series model. I have a 500 series Spitfire and Focke-Wolf that I have been looking very hard at for some now. They seem to have some great sales going on now and I have been thinking about taking the dive, but am not quite sure...............Ray