Hi, wondering if this cab would be safe to run with a 1987x? It has two G12H Anniversary 30 watt speakers. I was surprised that this 60 watt cab is specifically matched to the 5150 50 watt head. I would have thought a little more power handling capacity from the speakers would make sense to be safe. It got me wondering whether I could safely run 50 watt Plexi into it. I would be cranking it regularly. Any thoughts? Thanks!