Thanks for the help, and yes it is helpful.
My ex will object, because her claim is "I'm the mother and my son lives with me, so I have all the rights and you have no rights." This is what she said to me via text message and is one of many pages of evidence to be presented, it clearly shows her character and position on things. She says she doesn't want me to have anything to do with "her son" because she doesn't like me, and our son met my best friend of 26 years after my ex said she won't allow our son to meet any of my friends, "because I've met two of them and didn't like either of them, so clearly all your friends are bad people" (again, direct quote via text message).
But I'm assuming her saying "I don't like you" and "you broke my rules" isn't grounds for the magistrate to deny an interim order.
However, the interim order I am applying for is a duplicate of the final parenting order. It's quite extensive (about 21 clauses and sub-clauses), but that's because it's very specific and leaves no room for confusion, and everything is clarified within. Even to the point of being fair to both parents (showing I'm willing to co-parent, even though she isn't), and putting in clauses including that she has our son for the Mother's Day weekend, even if it's supposed to be a time when he would otherwise be in my care.
I'm hoping the interim & final orders will be acceptable to the magistrate & court. I showed my proposed orders to a Family Law solicitor and said there's nothing he could add to it because I've covered everything, and said it was written very well.