Hi Macrockdoc,
Thanks for the post and I'm very much in a similar situation as you are...
I have a stable 10.11 El Cap installation, but now I'm looking to make small tweaks and improve the power management, speed steps, etc. I have never created my own SSDT or DDST and I too am a bit intimidated by the guides, but, I'm willing to give it a shot. If you find any helpful links or if something clicks, please post it here for the group's benefit and I will do the same. I look forward to hearing how your progress is going.
Kind Regards,