Like wot Ray says
If you are using ally panels bear in mind that you cant' just drill a hole for the pipe to exit through, even if you put a grommet on it - the IVA inspectors don't like that. If you put the bracket nice and close to the wishbone mount it's easy to extend the hole for the wishbone bracket so it has plenty of clearance for the flexi hose to come through the panel without touching it. As far as the back mounts are concerned I found it better to have them pointing up - it gives a better run to the calipers.