I'm just rifling through them now learning about them and trying to gauge which ones Musk could tout next

I think the old adage "buy the rumour and sell the news" works well in these wild west days of crypto.
Yeah I'm not sure coinbase is the fastest to respond though so they might be the news part of the equation... Still the earnings from their tutorial videos should act as a good hedge.
There's probably a few other twitter accounts you could check that people might be following for rumours too (I assume people like cz binance are mentioned in news articles). The news still brings a bit of a peak too.