Disc brakes....:thumbup:
Your best bet is a yj pedal type E-brake, that would be totally out of the way.
The issue however would be the brake lines. It might be easiest to use your xj passenger side cable and a wrangler driver side cable, the wrangler passenger side is very short.To be able to remove the emergency brake cable without having to remove the brakes disconnect the clips that hold the sleeve to the frame and back plate. Route the cable so it wont get caught in anything by pushing the cable into the sleeve from the fame mounted end. This will give you a lot of slack on the cable and usually pushes the spring which locks the emergency cable to the shoe out. With a screwdriver you can easily pop the cable out from the brake pad. Thats just an idea, im sure someone else can explain in more detail.