I am considering the same setup (MK41>KCY 250/5 > PFA).
Does anyone run KCY 250/0 with KS 5 extension cable? Thinking the second option would be nice to have the caps and KCY mounted on a stereo bar and then have the option of running PFA > Long XLR for longer balanced runs. Other than cost any other negatives. The second option is about $130 more than straight KCY 250/5.