Catalina Installation - HP 6300 Pro SFF

Hardware:

CPU: 3.2 GHz Quad-Core Intel Core i5-3470
GPU: ATI Mobility Radeon HD 5450 2 GB
RAM: 32 GB 1600 MHz DDR3
Motherboard: HP 6300 Pro SFF (original motherboard)
Audio Codec: ALC221 (currently I'm using VooDooHDA.kext for the HDMI audio to be recognized)
Ethernet Card: Intel 82579LM PCI Express Gigabit Ethernet (I'm not using it)
WI-Fi USB Adapter: https://www.ninepluswifi.com/view/product-name-1.html (it's cheap and they have drivers for download in their web page, even for Big Sur).
Bluetooth: https://www.sabrent.com/product/BT-UB40/usb-bluetooth-4-0-micro-adapter-pc-v4-0-class-2-low-energy-technology/#description
What guide followed: https://dortania.github.io/OpenCore-Install-Guide/config.plist/ivy-bridge.html#starting-point
I followed this to get the video card working: https://github.com/chris1111/Legacy-Video-patch
What part I got an issue with: can't manage to get working two monitors at the same time (trying to fix it).
What files/config I am using: config.plist made in ProperTree from the Sample.plist from OpenCore 0.6.6 (updated to OpenCore 0.6.7)
Extra Info: the system are completely installed and updated to macOS 10.15.7 (19H524).
What's working: WI-fi, bluetooth, sound...

iATKOS | United Kingdom