Move 5) before AIO as I think it will remove the SG, or eliminate it all together, it's probably overkill. Might want to add clay into the beginning of the process.
Looks good otherwise. Just be sure to let the SG cure for 24 hours or so before topping with S100.
I did the S100 over Klasse AIO & SG on red and it came out excellent! Some say not to use the SG if your topping with a wax like S100 but I have no complaints.