Driveshaft and brake lines will be fine with your current shocks. They will limit down travel. If it road fine with the 4” RC, the steering will be fine for now too. Might see a little brake dive steering action but you get used to it.
It’s not until you mess with shock mounting and length do you get full use of the springs. I’m talking any spring, not just ORD. With my HDTC 4” springs and 14” front shocks, I ended up having to buy 12” lift brake lines from ORD and working on the driveshaft. Replaced the TC springs with ORD 52s and found myself adjusting again and going to a long slip shaft.
It’s not until you mess with shock mounting and length do you get full use of the springs. I’m talking any spring, not just ORD. With my HDTC 4” springs and 14” front shocks, I ended up having to buy 12” lift brake lines from ORD and working on the driveshaft. Replaced the TC springs with ORD 52s and found myself adjusting again and going to a long slip shaft.