A ceilidh I understood is a Gaelic word the English meaning being "an evening of social intercourse."
Have a musical sandwich - Dancing first , have a break ,people will be having a chat and a drink in which time you make sure the performers PA is working OK , bring on your performer(s),after they have finished ( again ) people will be having a chat and a drink check the ceilidh band's PA and Bob's your uncle.
Better to have chatting whilst the dancing is on, rather than the performers, especially at the end of an evening when people are becoming "lively ".

Good luck.