I'm not sure on the compatibility with wonderful whims. The required stuff is included, it's made clear which ones are optional if you closely read the "Requirements" spoiler above, if you want to delete the optional ones. And yes you can delete most any files you want besides the base ones and the hard requirements. Make sure you read the READ ME in the download to explain how to distribute files, I had the most luck just dumping everything I was interested in right into the mods folder
I've been having a lot of problems with my sister-brother husband-wife, everytime they try to do physical intimacy the sims resets them and mccc says there's an exception or that my mods are out of date but I don't think they are. Is this just a problem I have to deal with or is there a fix? Would deleting mccc help?