I recently built two of those. I gave one away and kept the other. I had OS 25s in both and the thing is an absolute blast to fly. One still survives as I lost an engine when I was low and slow and didn't have enough speed to get it down safely. She cartwheeled and came apart like a 4th of July fireworks pinwheel. I was kind of sad about that cause it was one of my favorites.
https://www.youtube.com/watch?v=4Sjf1ZWwW_Y