i'm in your conscience
If you're doing the in-game challenge on an emulator, I prefer you don't hack. v_v Pick a different game and don't be so hell bent on RSE because it has the least amount of trades and gifts, it seems. :/ Wouldn't bother monotyping either because you're limited.
That will be fine. I considered using a shiny as one of my traded Pokemon as well, haha. Just try not to download something that has THE OMG BEST MOVESET EVAR if you can.