Put down whichever school you have a preference for under the equal preference system it should not matter as they do not know what order you put down http://www.elevenplusexams.co.uk/school ... nce-system
I do not know about last year but the year before wirral was oversubscribed and you may not have got a place.
If there is not a place at wirral and you put calday second then that will automatically become his first choice.
If you do not get a place at wirral when school places are allocated , you can appeal or stay on waiting list , my friend did this and was allocated a place later( wirral girls) from the waiting list and they did not need to appeal
2 years ago calday took full allocation , last year I think they filled 170 places
We live upton / newton and my ds is at Calday he gets the bus from morrisons , he has really enjoyed his first half term and likes the bus journey, and seems to be doing well.
Both are good schools and I am sure your ds will be happy at either , so go with the one you and your son like best
Any questions just ask