Uneven speaker cable lengths and cable termination

Hi,

I'm getting new speakers that are single-wire only. This means I can't use my old MIT Terminator 2 cables, and need something new. My budget is limited as I've just spent all of it on the speakers :)

I'm not sure what the stance on cables is here on audiogon, so I hope I'm not starting a war :)
Anyway, I have some questions:

- Are equal lengths for both channels required? Is it possible to hear a difference? (my amp will be positioned to the left of the left side speaker, so I will need about a 4m run to the rightmost speaker. I was thinking of getting 4m and 2m runs)

- If I buy bare cable, is unsoldered termination helpful? The monster quicklock spades and bananas look really nice, but I wonder if they are worth the cost. (http://www.monstercable.com/productdisplay.asp?pin=4584)

My speakers are Audio Physic Scorpio II with Krell KAV-400xi btw. General recommendations are welcome.