Got a bit more done this weekend, this is the cunning plan I had but it didn't really come to fruition, the plan had been to run an internal hard line and have screw in compression fittings at the entry/exit.
Problems arose when I worked out standard fittings are 5mm and Hope hose is 6mm, So regular internal routing is go,
These are preliminary photos, I have more finishing work to do, but you get the idea