[Nonfractal]

For me, option 1 will be NSR red.
I tested Reds on wood tracks at Milton Keynes (on an NSRc7r)  and they worked really well.
I don't see anything in the 2020 rules prohibiting red tyres. 
However, I will disclose a full spec to the host prior to shipping and change the tyres if the reds trigger objections.

I had NSR tyres on the Megane for the winter rally and the same pair are still on there for the upcoming Brighton to John o'groats.

I see a lot of urethane on  the aussie proxy.
I'm guessing that the heavier cars work their tyres hard so NSRs may not last the distance for them.
Urethane dust is everywhere on the top5 2020 cars when they were opened for review.

My big unknowns are: 

The guide. 
The shallow cut down scaleauto blade (cut for rallying on classis track) won't do the job. 
Likely I will go for a deep wood NSR screw  guide
Suspension guide is probably unnecessary for the aussie proxy.
Figuring out the guide spacers is a challenge without seeing the tracks. 
It seems like every wood track has a different slot recess due to different router bits and different rail braid. 

Motor:
i'll probably stick with my old scalauto sc25b sprinter motor. Inside the rpm spec but loads of grunt. 

Lights:
Lights (crystalwork)  are mandatory but they do not have to illuminate.
I may pull the ZMachine light kit out or maybe buy a new Megane body for the aussie proxy. 

Alan W