Quick update, today I've ordered an Ohlins TTX shock as it came in at pretty much half price... couldn't resist it!
I've really had a nightmare mounting everything up inside the Ten Kate rear subframe. There is just NO space on the bike for all the electronics to fit once you fit an aftermarket subframe. I couldn't mount my PCIII or Fusebox anywhere, so I made a carbon fibre box to the correct dimensions, and mounted it alongside the battery holder like so: I have since lined the inside of the box with thin black foam.
However this meant that the loom on the PCIII was far too long as it supposed to be mounted far up in the tail of the standard bike. I've had to cut the wires down, and use specialist connectors similar to these designed for motorsport applications to hook the wires back up.
So now I think
I have enough room under there to mount everything back up, and keep it all tidy and tucked away. This is my job for tomorrow, Then hopefully I can get all the bodywork back on wait for my Ohins TTX to arrive and then try and get back out on track!
Edit to add:
I thought I'd just mention that if you look at the original photos on this thread, you'll see that my CRF rear master cylinder is mounted to the original mounting positions on the rearsets. This causes the rear brake lever to be in totally the incorrect position, far too high, rendering it pretty useless. If you look further down the photos you'll spot a nice alloy bracket I made by hand to position the M/cyl in the correct position.
I started off with a solid 6mm sheet of aluminium, shaped it and cut the holes out very carefully. I then filed, sanded and scotchbrited until I was happy with the finish. I also used steel thread inserts to strengthen the thread in the mounting holes.
The M/cyl now sits in exactly the correct position. I just thought I'd add this for anyone who is considering fitting the CRF M/cyl as you need to take into account on some aftermarket rearsets it will cause the lever to be far too high, even to be adjusted out.