Wire routing

I need to run a power and a contril cable from the driver's position (RHD) into the engine compartment and I need the best cable routing preferably following the main loom. unfortunately there are no publicly available servivce manuals for this new model yet (BMW730LiSE). I also need to route a cable from the equipment rack in the rear right encluse in the trunk to the drivers dash position (RHD).

Can anyone assist. It is important that this installation is as neat and professional as possible.

Thanks