The biggest advantage that Windows 8 tablets bring to the market is the ability to run full Windows apps alongside Metro 'tablet' apps. Unfortunately the former style apps probably won't run well on small screens. Such a small display is aimed squarely at running Metro apps for a solid tablet user experience, and that leaves a big part of the Windows experience behind.
Realistically if you remove the ability (and desire) to run full Windows apps you might as well get a cheap Android tablet which has thousands more apps. This will provide a much richer user tablet experience than a Windows 8 solution based on my experience with them.