For some reason I thought that Twitter4J double checked outgoing messages automatically, but, perhaps not. Can add in a check for 140, and then when the 280 limit is applied to everyone, can up that.
The Twitch Cache error is normal, for Twitch, it means that there was a moment that the Twitch API didn’t respond. This happens with the Twitch API due to network latency or due to their own service having hiccups. If it constantly fails, every 30-60 seconds, then there is either a network outage or the Twitch API is down.