Hi all anyone no were you can get a Hydraulic Disc Brake Hub small enough for the front wheel can only find 100mm and the forks are 85mm cheers
Why hydraulics? extra weight and complication to stop a very light vehicle.
Make sure that the rear braking power exceeds the front otherwise a jacknife is likely.
Imagine if it said on the news that a road was closed due to a jacknifed C5 :P