I might want to consider waiting for GBHawk, a new GameBoy emulator core for Bizhawk that is in development. It supposedly is more accurate than gambette, but I might have to wait some time for it.

Hi, I'm Memory, and I'm currently working on a TAS for this game. I'd like to make sure my work is optimal so if any of you would like to help me, please let me know.

Input File For Bizhawk 2.2.2 (requires GB BIOS): http://tasvideos.org/userfiles/info/45934655533608134