I have a pair of the XA60.8's driving Paradigm Persona 7F's, sligtly less sensitive than your FSU's. I'm very happy with the amplifiers and I'm confident they will have no issue driving your speakers.
Caution: your room is relattivly small and the XA60.8"s run very warm! I am a fan of the Tube Pre-Amp pairing, that combination will also add to a noticable increase room temperature. If you're buying new, I would reccomend purchasing from a dealer that will grant a 30 day return, just in case.
Best of luck!!