Does someone know if I can use it even without using Valenwood and so on?

http://www.nexusmods.com/oblivion/mods/46659/?tab=1&navtag=http%3A%2F%2Fwww.nexusmods.com%2Foblivion%2Fajax%2Fmoddescription%2F%3Fid%3D46659%26preview%3D&pUp=1

Yes you can. I am using it. In fact, these maps are so beautiful that prompted me to download Elsweyr again. These also show all the physical features from the UL mods. Totally recommended.