Congratulations! I currently don't have a USB C type device, so I don't know if it works. I probably guess not cause I didn't see others get it worked. As far as iMessage, I am very confident it could works out cause I struggled a lot on this and finally get Hand-Off enabled which means a lot to me cause I have many Apple device to work with. You can find fix iMessage just on this website, it's a huge tutorial but also some youtube video instruction. The wifi card and bluetooth I am using currently is the original one from Apple, I don't do anything and it works perfect. I don't use windows so I don't care if this card has driver on windows. If you are using wifi card from other manufacture, you should find some tutorial. Rehabman has his kexts and patches, I've seen some tutorial on Insanelymac. Installing this system cost me a whole month and many sleepless night. Using clover means you need be aware of those options and setup, you can find it on wiki of clover efi. I don't use Multibeast at all cause it's just for starter who only require basic functions. Post installation is always a hard job and the fun is among it. By the way, if you have a better method on cpu management or the SSDT editing, Please let me know.