Here is where my total ignorance regarding the technical side of ROM hacking is made evident!
I know that some people have had difficulty patching the hack to the ROM. As it happens, the patch is only compatible with a headered ROM. It won't work with a nonheadered ROM. I was too ignorant to realize this myself, but someone who downloaded the hack pointed it out to me.
Once the patch is applied to the headered ROM, the exact filesize should be 1,049,088 bytes.
Also, while we're on the topic, there will be an update to the hack in 30-60 days. I discovered a few minor bugs that can be easily corrected.