Fast, I would buy the KEF's in a heartbeat. But here is what I'm worried about for you. The Ref 3's 91db rating is a little misleading as these speakers are 4ohm, it will take a AMP of considerable power (300watts) to make them really open up and drive a fairly large space as you described. So It will be a letdown for sure with only 130watts :-( If you want these speakers plan on getting a proper amp to drive them.
Matt M
Matt M