The official Android packages for the Vi10 are here:
http://forum.chuwi.com/thread-169-1-1.html
There’s a tutorial at the bottom of the first post.
It should be possible to make the data partition of Android fill the area where Windows is, or was, by changing the partitioning file in the Android package.
You can also use GParted Live on a USB stick to resize the Android EXT4 data partition as you see fit. Takes ages, longer than the other approach, but it has the advantage of leaving all your Android system partitions alone and doesn’t wipe the existing Android data.