OP to reiterate what others have said, you need to fill in the application form, putting the school you would like best in first place, the next best school in second place and then in third place, somewhere close that you are sue to get in to - in your case that sounds like the school you have been told you are in catchment for.
The thinking behind this is that, if you put down three unrealistic schools, you will then be offered a place in a school that has spaces - likely to be a less successful school but also likely to be far away. Better to be at a poorer school close by (walk to school, local friends) than one five miles away (bus ride, not knowing anyone).
Putting your catchment school down WILL NOT jeopardise your chances with your first and second choices - you will be offered a place at your first choice if there is one, if not, your second, and only if not, then your third.
You may get lucky and get your first choice. If not, you can appeal - and this is where specific things about the first choice school come in. For example:
My child plays trumpet and there is a brass band at the school
My child plays lacrosse and there is a team there
My child has a Spanish mother/grandma/cousin, has learned Spanish and Spanish is offered at the school
My child is very keen on science and the school is the only one in the area to offer triple science at GCSE
Unfortunately the factors you mention in your posts won't hold any weight in an appeal. But hopefully you won't need to appeal anyway.