Pro1000 digital interconnect - acceptable length

[Jim_Anderson]

I am looking at replacing my speaker cables and thought that before I do this (issues with length required for right speaker of >15ft limits what I can afford to purchase), to look at shorter speaker cables by placing amps closer to speakers.  

Would 15ft cable between the Pro's be acceptable?  If I can do this then my options on quality speaker cables increases substantially.  

Jim