Looked at pics on the internet....a very nice orchid. As far as having different culture routines for every "Cattleya" that might be the go for those that are primary hybrids and therefore have species influence. For example you might give those with B. nodosa influence more light and those with Sophronitis influence cooler temperatures.

For the complex hybrids all you can do is give them good "cattleya"
conditions and see how they go.

About repotting - only repot if it is necessary, finding a pot that will fit the living, healthy roots. Planting an orchid in a pot that is too large can lead to root rot.