Apologies but I'm away from home at the moment. I'll update the OP with more detail when I have a bit more time. But I'll give you some quick answers below. <br />
<br />
<br />
install Official MIUI China developer ROM<br />
Remember to log in to your Mi account in the developer options<br />
<unlock><br />
install Official stable rom<br />
install Official (Non-EU) TWRP (requires stable)<br />
copy/install EU ROM after step 6 (aka before exiting TWRP)<br />
While still in TWRP, install SuperSU in systemless mode. <br />
Boot to system once<br />
Boot back to fastboot and install EU TWRP<br />
Boot to TWRP and install Magisk, suhide<br />
Boot to system and install magisk manager