I'm not to the wiring stage on my RV8 yet, but I recently did a Dual G3x Touch system when I built my Murphy. I also have a two battery, EFII dual bus system, dual EFII electronic ignition, lots of lights, two servo AP, heated seats, smoke system, etc.
Do you have any details on your power distribution system that you're willing to share? Your setup sounds very silar to what I'm planning, except I'm baselining dual a AFS package instead of the G3X.
Thanks!
Design and scratch fabrication of the panel and all avionics plus 12v power systems wiring totaled 500 hrs for me. Around one calendar year.
I had 230 hrs in all wiring tasks. I did all panel wiring (dual GRT displays, etc) but had Stein make up a harness for the Garmin radio/ponder stack, which I purchased from them. I'm a mechanical engineer by profession and have never done any wiring work like this before.
My two best decisions were a) getting my Garmin radios, etc from Stein, and b) attending a Bob Nuckolls weekend workshop , and then following his Z-11 diagram, albeit slightly modified. Everything worked the first time it was powered up.