Would using a Global Cache Itach serial box to the serial input on the AC12 along with the vMSR app be the most appropriate way to handle the 6k control without having to keep a MSR remote available in the living room?

Main: 800 with LPS, 861v4, 818v3,8000.1SE, 96/24-6k C, 96/24-5k sides, DSP33 rears, M2500 + Velodyne 12", QNAP-MS600, Ruby, PS3, HD621, Oppo.
Games room: G68J, HD621, M33's front, analog ceilings rear, Velodyne 10"
LR- 6k 24/96, MS200, 800 with LPS