I have 1900 by 1400 or something like that.
This is really good I think, even if for a studio workstation I would advise 2 screens to see clearly your plugs and daw.
About w8, I was affraid a bit too but it works really well, the missing start button doesnt bother me anymore, the general ergonomy and information display in built in apps is a bit better. And stability , performance is as good as win 7.
So I would say if you have w7, it is not so much better. But don't worry it is not bad.