Bi-wiring seems to be a bit of a controversial way to go. Seems like most people, and even some manufacturers, recommend either doing a double wire shotgun approach or single wire with good jumpers. Some people report benefits going one of these routes where others hear no difference (my speakers sound marginally but significantly better with a double run). Probably depends greatly on how the speaker and/or crossover is designed, so I agree with the above that a free trial is the best way to go. I wouldn't expect huge differences here, so if there are other areas of your system that could use improvement (i.e. power conditioning, dedicated lines, room treatments, source, etc.) I'd probably address those first, but that's just me. Best of luck.
