female needs expert advice

bough a new pair of mirage om 5 loud speakers.Iam biamping them with 2 classe 70 power amps. these speakers have 2 250wattamps built into them for the bass.I have 2 pairs of tara labs speakers cables about 8 years old tara quatums reference.what do you think would cable for them. I want something that is fast being in boogie factor @transparent don,t we all.One more question ,Iwas horizontally biamping these untill iwas talking to the maker of these speaker who told me to vertically biamp.To do this he said to take the two + and two- speaker spads of the rt speaker and put them on the rt channel of one amp and use the rt channel of amp input to rt channel of preamp do the same with left speaker and other amp . i feel that using one channel of eash amp is a waste any other ideas is welcome I don,t want to buy new amps these to me sound good but i just hate the waste the reason for doing it this way the top two things on speaker are for the mids and highs the other 2 are just to send a signal to the built in power amps fun hey? so help me guys thanks.