Hi Lawrie & Mary
Welcome to the Forum. If you are not sure of something there is usually a few people on here that can give yo some helpful advice. Don't be afraid to ask what appear at first to be daft questions as we all have those.
I'm sure you will love your 530 when it comes. It is a similar layout to our 540 except our bed is not fixed and the space works really well.
MikeT