Issues with Big Sur install on Dell Latitude E7440

Hoping that someone might be able to give me a hand....I've spent a fair bit of time trying to get it rolling by myself by following the guide and I've got a few remaining issues I can't squash. I'm certain that it's PEBCAK so help appreciated.

1) Can't get the trackpad to work

2) I got Wifi working, but not BT

3) Cannot get Audio to work

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• CPU: I5 4310U
• GPU: HD 4400
• RAM: 8 GB
• Motherboard/Laptop model: Dell Latitude E7440
• Audio Codec: ALC292 based on checking in linux...but unworking with any of the layouts set in bootargs.
• Ethernet Card: Intel (working
• Wifi/BT Card: Broadcom BCM4352HMB
• What guide/tool followed: Dortania's OpenCore Install Guide
• What part I got an issue with: BT not working, trackpad not working, audio not working.
• What files/config I am using: Config.plist | Opencore log | Screenshot of the EFI structure below.
• Extra Info: I'm fairly certain that my kb is off as well...probably something related to either the Kext or the SSDT...I can't figure it out though.

Thanks in advance!

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https://preview.redd.it/jtvvw510awb71.png?width=1920&format=png&auto=webp&s=8763e164dd00556477041c3d071b08c68c1b505a