Legacy Cresnet bit me in the ass on a upgrade. It wasn't the number it was the type of devices combined (at least according to tech support) Processor would freeze every 2-4 hours. Had to swap out the cp3 for an Mc3 It was fixed in a firmware update a few months later. But it still makes me nervous and not knowing the rest of the system I would be booking a flight
"If they give you ruled paper, write the other way"