Savarez500CJ High Tension Classical Guitar Cristal Trebles, Corum Basses, Full 6 String Set

I have a cordoba c9. it has the savarez 500 cj strings. thinking about changing. what gauges are these comparable to in other brands?

II bought a Cordoba C5 and a string just broke. Can you replace string with another type such as 500 CRJ which has better reviews?

Do you have flamenco guitar string in low tension

Will these work for a 1/4 size guitar?