@SALL20 — I don't live in Houston but rather in the DFW area. But anyway, here's a recommendation that applies for most if not all zones. If a freeze is forecast (and you trust the forecast), water your plants beforehand. It will keep the temp a degree or 2 or 3 higher which can make a difference. Of course it probably won't make a difference if it's going to be a
really hard freeze.
Like you, I move my container plants into a huddle. Go team!
Sounds like you've got a good plan.