Arrrgh... attempted the rear brake today. People reading this, learn from my mistakes if you want to try and do it without bleeding:
1 - when removing the hose at the lever, remember lefty-loosy, righty-tighty.
2 - you can pull the cable routing tube that came with the frame. I sat there puzzled on how it would route without any sort of guide, or pulling the hose through. I used the tube to route some extra shifter cable I had, and tried to use the cable as a snake, but the hose + cable + tape wouldn't fit through the opening. I gave up and just pushed the hose through, and wouldn't you know it, it came out the opening!
3 - because of #1, I ended up totally crushing the olive nut around the nipple. No amout of screwing around with it or cursing at it would get it to budge.
Was able to finalize the shifter cable routing for both the rear and front, and at least installed the rear caliper. Right now, I still have it sitting downstairs with a cut rear brake hose. I'm hoping that no air will get in there for the next few days, because I won't be able to hit the LBS for that long. Hose is still way higher than the caliper. Hoping i don't need to bleed and can just get by with a new insert