Yes, Masamune, the file size is right.
Here's the complete list of downloads. Minimum is the first two, beta_8 and the 8.1 patch.
The others are optional. Install beta_8, then the 8.1 patch. Maps are included, Medieval maps deleted. Maps are sorted. When hosting MP maps are listed first.

Beta_8
8.1 Patch
Tosa's new maps
Sound add-on for beta_8

BTW, Tosa, what's wrong with the mizu server?
The links don't work for me.

R'as