What temp to keep?

Question for all the experts out there. As my sig states, I have a variety of fish (some of which will be moving soon). The white clouds, pygmy cories, shrimp and snails will be staying at the very least. The white clouds prefer colder temps (72 is generally regarded as top of the comfortable range), the pygmies have that as a minimum. I plan on keeping it around the 72 range.
Question is this all right for the snails, shrimp and plants? I have no idea what temp the plants want.