Should I update Bios before switching from Clover to Opencore ?

Hi guys, I'm about to Install Opencore instead of Clover [ my current Catalina 10.5.2 Hackintosh ]. I saw some posts recommending updating Bios for Opencore. Is that relevant in my case with Opencore 0.7.4 [latest] or should I stick with previous Opencore versions? what about NVram and my Gigabyte Z390 Designare [rev1] ? Should I cleanup Clover nasty files before or after Installing Opencore ?

I prepared 2 Opencore USB drives, one with Catalina and other with BigSur. My EFI and SSDT are ready.

I'm currently dual booting Windows 10/ Clover Catalina 10.5.2. Here are my Specs :

• Mobo: Gigabyte Z390 Designare
• CPU: Core i9 9900k
• GPU: Red Devil RX 5700 XT 8G GDDR6
• RAM: CORSAIR Vengeance RGB Pro 16GB x2 = 32GB
• SSD: Samsung 970 EVO PLUS 1TB M2 x2 [ one for Windows / one for Mac OS ]
• PSU:Cooler Master V750
• Monitor: MSI MAG322QVR 1440p 144hz curved
• Speakers: Logitech G560 lightsync gaming speakers
• Others: Corsair Essential Gaming Bundle [ keyboard/Mouse/Headset]

I'm currently on Bios F7 version but there is new F9j version that have the changes as below :

1. Enable Resizable Base-Address Register (Resizable-BAR) option to enhance GPU performance.
2. Update CPU microcode SA-00295 to solve potential security vulnerabilities in CPU, please refer to more information: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html
3. Enhance RAID AIC compatibility
4. Fix CPU Vcore and power behavior

If you have an EFI for same or similar specs as mine please share with me. Appreciate all the help. Thanks