That is a nice flower. You have done well.
It is interesting that your first cross is lindleyanum X longifolium when there are so many choices. lindleyanum is not a common species.
I've seen a few of these that tend to suffer from a common problem which is a twisted dorsal sepal. Yours appears to be fairly straight and upright. It might make a good parent in your new breeding program because of has good colour and a good dorsal sepal.