So as a follow up to this, I was able to get the window to embed and resize, so I feel like I am half way there.
Now the problem is that when it sets the Metro UI window as the child to the form it just gives me a blue screen, but the window still has the content in the back, just not visible. I tried the repaint option on and off with no difference. The only thing I can think of is that ModernMix is only one piece to the puzzle.