So after talking with a couple girls on here I bought some plants, threw them in my sorority tank, and added the girlies. Here's a short vid:
I want to add a handful more floaters; it looked like I got more than I did. But otherwise the girls don't seem to be having too many issues. They're establishing dominance currently, but seem to be doing so pretty non aggressively. There's a nip here or there but mostly it's just a lot of chasing and flaring. :) My Mystique was pretty high and mighty at first, now she's running away a lot...I need to keep an eye on her, she's by far the smallest. Though the platinum isn't that much bigger.
The girls that are in there: