I myself don't own a Sundowner 50, I was making my comments based on the feedback from Nathan King. The best I can offer is, having seen Nathan fly his Sundowner, Nathan's Sundowner 50 ARF doesn't appear to be hard to land at all:
http://www.youtube.com/watch?v=WWu632OxKVw
If you like how your Sundowner 50 ARF looks, handles, and lands with a .91 FX on the nose, then that is terrific! Enjoy.