Thanks Ford. I will probably get some pre-made lines from a parts store and bend them myself. I should be able to rent a bending tool from them and I am reasonably mechanically inclined. I am just wondering if I need to replace the line coming from the front of the trailer as well to get rid of the curly-Q along the frame rail. I was warned that it tends to trap air in the lines and makes bleeding them difficult.
I would weld bump stops to keep the U bolts from hitting the frame. And convert to either hydraulic (they work extremely well) or to the more traditional electric brakes. It is your trailer now, not a rental and you can have it anyway you want it as it will have a dedicated tow vehicle.