-nowadtextures isn't really meant for that. it includes ALL the textures and just uses up space. so just go to options->textures, and have the wads you want to use in that box. it will compile using them, and have it load them from the computer of whoever is running it.
but, if you want to include a custom wad, and not have to send the wad along with the map. use the wad include method.
exert from Atoms custom textures tutorial:
Including the Textures: Method 2
...-wadinclude, but this one only works with Zoner's tools (Version 253). Instead of putting all of the textures used in the map into the BSP, it only includes the ones from the WAD(s) you specify. In other words, you can tell it to include only the custom textures that you created. To use it put -wadinclude wadname as your CSG parameter, where wadname is the name of the file. You don't need the extension or path (these will be taken from WorldCraft). So your Parameters box should say something like this:
$path$file -wadinclude mytextures
To add more than one wad file to your .bsp, all you need to do is add another -wadinclude command
$path$file -wadinclude mytextures -wadinclude mytextures2> and so on...