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.
The applier allows you to run everything in the patch, except erasing the rom. If you apply every single tick box and button on the bottom, you will have his hack installed, or you could just install the ones you want. I tested it this way last night and SMCA will open it. The only thing it won't do is erase the rom.
Hmmm, use the hack applier application. I believe it may not be able to find some data. By using the application to apply the hack, you won't overwrite any old stuff, except the stuff that is required to be. It should have come with v. 1.1