Hey there Oldmate,
Did you get this sorted?
I just pulled the rubber liner off from around the front passenger door and rear passenger door, i was then able to slide the wire into the roof lining and down the pillar, got to be carefull that you don't inhibit the curtain airbag.
Around the cargo area i was able to push the wire into the roof cavity between the plastic trim and cloth without removing it, I was able to unplug the rubber liner protecting the wiring loom where it tansitions to the door and using a 500mm cable tie was able to fish the cable through, bit fiddly but relatively easy to do. Actually for all fishing activities in the car I find the 500mm cable tie works really well.
I also hard wired it, i placed the module in the cavity under the cup holder, popped off the cover at the side of the glove box/ pillar and fished the wire behind the glove box, was able to pull off the side trim to get to the centre console area. Easy to get permanent power from the battery to here and i just ran a seperate wire from the fuse box back to the module for the key activated accessory and I think you can see in the photo where i got the earth from, had to change that bolt though as the OEM one was heavily painted.