Unfortunately years ago I tried to make my own Pokémon game, but each time I try software (advance map and others...), I got an error message ("xxx is missing" and so on...). I was tired to try to make my version of Pokémon, so I give up...but thanks for the idea !
Did you already play "Pokémon Emerald 386" ? If yes, did you find a wild charmander at low level ? (I mean around level 5).
Note : is it me or their aren't many people on this forum ?