Wow, I have not been active on this account in a very, very long time. I am one year late on answering your question(woops lol) but I never actually got that far translating Pokemon Mystical. However, I did look and I still have my work-in-progress IPS file, so if you want it then go for it. It would be great if someone actually could translate the ROM Hack fully into English so others can play it. Here is the file, and I give anyone permission to use it as long as they give me some credit(also message me if you do because I would love to see it) in your own translation.