[Guide] NAS Killer 4.1 supplemental + deals

Guys I bought all the parts recommended including the 32GB combo (chenbro) along with cooler master 350, i2, sata cable. I am a complete newbie here. What are the next steps after I assemble the system to install unraid on it? I have a 8TB red WD and couple of ssds. Do I need to do this ([Guide] Updating your LSI SAS Controller with a UEFI Motherboard) once I assemble before I install unraid? What are the next steps. I did go through the forum posts but no luck as I am not that NAS savvy.