What makes good firewood depends a lot on your perspective. If you live in Canada and want to heat your whole home with firewood, then you would want to get as much bang for your buck as possible. If, however, you just want to make a little heat and and a little atmosphere (and seeing as how you're in Lakeland, FL, I would assume that is the case) and do a little property improvement to boot, then Chinaberry is hard to beat. If you're going to be cutting it anyway, then what the heck, why not make a little firewood? It splits easier than red oak, and that's saying something! Certainly more enjoyable to work with than sweetgum.