Sounds great, looking forward to hearing - and hopefully seeing - how you get on.
And just to add, if you fancied the stovetop rainbow dyeing, the process doesn't mix the fibres at all. You don't move them around in the dye at all, so they're only disturbed by being put in the pot and being taken out and rinsed. I didn't have any trouble maintaining lock structure this way.
And for this method, you don't need to wash the raw fleece first, it gets washed in the course of being dyed. So if your start point is
unwashed raw fleece, it'll save you a process.
And in fact, this process works best on fleece which is still greasy - the presence of the grease helps slow the rate of penetration of the dye, which helps to achieve the myriad of colours effect. If you like your dyed fibre still slightly greasy, then cool the fleece completely in the dyepot; if you prefer your dyed fibre devoid of grease, then remove it from the dyepot when it's still a little warm, when more of the remaining grease is still in suspension in the dye bath. I guess you could also use more washing up liquid to make sure more of the grease is dispersed, too, if you wanted.
I sound as though I'm trying to convince you to try this method - which isn't my intention, I promise! I just wanted to be sure I had adequately explained the pros and cons of the method.
Oh, and I have now put some of the pics of some of my dyeing sessions and results up on Ravelry -
hereFor non-Ravellers, here are two of the 'results' pics:
1. Rainbow-dyed Teeswater locks and tops, drying.
2. Yarn spun from our own Charollais cross fleece, rainbow-dyed in two different sessions, with a purple exhaust bath in one session and a green one in the other. One ply uses the exhaust-dyed fibre, the other the main bath fibres.