The st folder and it's contents are what loads the .elf file, don't delete it.
Install the homebrew channel if you haven't yet by using the boot.elf included and follow the intructions on how to use it, put gecko into the HBC and delete the .bin file. That should fix it.
All the charge shot levels can be the bow, by making a model with all three of them overlapping with a bone for each. Then make each charge animation shrink the ones you aren't using.