Btw, the HIP mod folder is called modules, not sure if I ought to change it to HIP.
The default HIP mod folder is called Historical Immersion Project. The modules/ folder are the source files required to compile any combination of the mods with appropriate compatches and the like. Neither folder should be renamed. If you run the installer and there is no modules/ folder, it will shit a brick and complain at you.
Everything else you describe seems fine... Unless maybe you don't have a Historical Immersion Project/ folder for whatever reason? If so, just re-run the installation. Remember, you should have the installer directly located in your mod folder when you run it, or it will put the generated mod in the wrong place. Check the instructions again in the OP.