I'd be interested to hear how you get on with it? Could be a bargain. From my experience the Chinese are great at building stuff if they're told exactly what to build. However they tend to build sh*** if left to their own devices!
What speakers are you going to drive with it? I love the sound of valves but they don't have enough power for me, I tend to play music at 'healthy' volumes ;0) You get away with it if the speakers are very efficient, kind of.