OC and Sonoma update from 10.15 - cross check my thinking

Hey- Looking for peace of mind in a OC/OSX update, I’ve put it off and the time has come to leap forward

• Current build- OSX 10.15.7
• Z490 Vision D
• i10700k Comet Lake
• AMD 5700XT 8GB

• OSX on a Samsung 980SSD boot drive,

  • 2x 3.5HDD Internal backup drives for Mac
  • 1x- Windows 10 bootcamp drive for gaming.
  • ^Does this even need to be boot camped? Or just boot separately - I am confused here about the Bootstrap process, and if I can just dual boot avoiding the camp part all together.

• I want to update to latest OC and Sonoma

• Sequoia seems possible with my hardware- But how stable is this…?

• My thinking is I need to -

• Create OC / Kext USB

  • Move new OC to EFI
  • Update required Kext
  • Run Sonoma Installer from USB
  • Do I need to do anything for my existing Window10 bootcamp and storage drives?
  • ? Pray for successful start up?

My main concerns are running the new installer and bricking the system in-between OSXs. If I keep a EFI back up of my current build, is restoration as simple as putting the old working EFI back in place and reinstalling 10.15? My HDDs should remain unaffected, right? In previous hack builds I’ve always just installed a fresh drive with the latest OSX, this would be first time major updating instead.

I’ve read through the Dortania guide a few times about updating OC/OSX, but am curious to anyone’s experiences/success, Thank you for any input.