I use 3m + 6m XLRs between pre and monos, and then 2.4m speaker cables. The system is dead quiet, linear, and highly resolving. Changing the ICs resulted in little change. Changing the cables was more noticeable, so I'm glad the cables aren't the longer ones!
I'd be more concerned only if the longer ICs weren't balanced. Good luck.
I'd be more concerned only if the longer ICs weren't balanced. Good luck.