Mason Dixon KAL

OK, so i finally started. I've been dreaming about this since I bought the book, weeks ago. I'm using Plymouth Cotton Naturale. I just picked up a few skeins a few days ago, and need to pick up more in the blues and greens to get much further. I'm gonna play with mixing the varigated yarns with solids to get the look i'm going for. And maybe even solids with solids. Half of it will be on the yellow/orange/red side and the other half yellow/blue/green I want to get darker as i move to the outside, and add some purple somewhere, if i can get taht. maybe some black. Any ideas, thoughts, comments would be appreciated. Excuse the punctuation and spelling, only a couple hours sleep, and i cant seem to get to bed for thinking about this.