Congrats on your new disc and the self install. We installed them on our previous fiver and ordered them from the factory on our current rig. Would never want another fiver without them.
I think it is important to run the lines in a fashion where they are least likely to suffer damage from possible road debris. As we know, the lines get damaged and you have no brakes.
I was extremely fortunate to not have lost my brakes when I could not avoid road debris on a trip a few years ago. The debris hit the sewer discharge and broke it off at the cap, ripped off both holding tank handles, and missed the brake line by about an inch. It would have been ripped loose or bent to a point of being useless but I got lucky.
So just a thought for those with disc, consider a path of protection in your installs. I even considered running the main line inside of a heavy gas line tube down the side to the split to protect from such a thing in the future.
Finally, I heard of a product in development that will immediately stop fluid loose to the wheel where a line is compromised so that all the others will function. That would be a nice device to have once on the market.