I'd say it's worth a look. I have been very happy with the Emotiva amps I have. I won't say there aren't better out there, but they are a real bargain for what you get IMO. With the sale and free shipping, you wouldn't be out much if you decided to return it, though I'm willing to bet you will keep it if you buy it. I don't think you'll have to worry about drawing too much current. I have all my HT gear including an XPA-5 on a single 15 amp circuit (by necessity) and have never tripped a breaker.
How do you like those Songtowers? I've heard great things about them, but never had the opportunity to listen to a pair.