No!!! B&W N803 will not sound good with a single run.
Second, forget AU24 and get Acoustic Zen Satori Shotgun - double run, just what the N803s like. Trust me, I tried different single run speaker cables. N803s don't sound right with single run. Don't go there with this speaker. Audience speaker cables will probably not give you the bass or the speed of AZ. You will also get a soundstage that is shallow comparing to AZ. If you want you can try though, but my bet is that you'll be waisting your time and money with a single run speaker cable.
Second, forget AU24 and get Acoustic Zen Satori Shotgun - double run, just what the N803s like. Trust me, I tried different single run speaker cables. N803s don't sound right with single run. Don't go there with this speaker. Audience speaker cables will probably not give you the bass or the speed of AZ. You will also get a soundstage that is shallow comparing to AZ. If you want you can try though, but my bet is that you'll be waisting your time and money with a single run speaker cable.