Pick some variables that aren't used. Just start at something like 5000 and increment by 1 at each box. Make sure you write down which ones go with what so you can use them later.
Also, introEditer by Mewthree Inc does work with the patch. However it will only edit bank and level. No X-coordinate or y-coordinate. There isn't a text box to type in, but trust me. You can edit them by clicking on it.