Lightware C6032 32" Cargo Case, Padded (Black)

Yes, that will fit. The C stand you are referring to is designed with a removable base. So with that it will fit in the case.

Interior Dimensions ø: 11.0 x L: 48.5" / ø: 27.9 x L: 123.2 cm

Unfortunately Lightware C6042 42" Cargo Case, Padded (Black) is a few inches larger than the size allowed in most flights, but I would recommend checking with your airline because what is allowed varies a lot between airlines and also you may be able to pay extra to have them check it.

The dimensions are correct. The Lightware C6052, 52 is the outside dimension. The C6050 50" case is longer.

Nope, it sure doesn't.

Yes, we usually use this as a stand, soft box, tripod bag. We tend to put the tripod in another protective bag within the Lightware case because we have a full bag and fly with these bags all the time.

I reckon it would. Its a bloody heavy duty bag. It would more be if you could lift it or not

It'll depend on how short the stand breaks down. I can just barely fit the grip arm (that measures a little under 42 ) in the bag. it has to go in diagonally to fit. I'd say 40 is the maximum length things can be without needing to jam them in.