With cinela apparently the new osix uses the same suspension so just unscrew and attach to indoor mount. Thats my understanding. Still waiting to see the new osix piece with xlr.
Don't really see how you can. With a 788 you can record to 3 separate media. Can't exactly monitor them all the time. Was there an error message on the 788? Anything go offline?
A zephyx won't work for him as the soundfield mic has to be a shorter version right from the factory barrel of the microphone is shorter. So pianissimo might be his best bet if he were to go with cinela.
Personally I always thought the 30 should be at the bottom cuz its slightly longer perhaps it's just me I have a Cinela pianissimo as well and I'm waiting on a 30 / 8040 mount