Scoping houses, also considering that girlfriend (possible future fiancee) wants to teach ballroom. Wish to surprise her with some possible places that can have an area fixed up as a ballroom studio for teaching. But what are the minimum recommended dimensions of a possible at-home ballroom teaching studio that's even practical... ie: what floor length x width is necessary for a couple practicing a competition level routine, and how high does the ceiling need to be for that (with all the flipping, spinning and jumping, etc). Is a basement ceiling high enough or will they need airbags installed? - ha-ha you can tell I'm no ballroom dancer, but she's a competition winner & teacher... have fun answering - thanks.