Looking for ic

Check out used Audioquest Sidewinder or Copperhead cables. Should find ones in your price range.

What speakers are you using? The power handling spec doesn't help much. Check out the impedance and sensitivity specs. Problem there is that manufacturers measurement of impedance is an average and sensitivity are not always accurate. A low impedance, particularly in the bass region creates the greatest demand on amplifier power.

Sorry I missed the speakers you listed. I agree with Elizabeth that your Marantz amp should provide the needed power for the Bronze speakers unless your room is exceptionally large. 

I find that the Audioquest cables are well made. I buy them used.