Plastic Sisters of battle

I am hearing rumors of plastic sisters of battle, but these wont be coming out for a long time, if they even do. So for now I must resort to conversions....

Since I want my army to be diverse but still look uniform, I have decided to convert atleast 1 squad of ten sisters of battle using plasticard, green stuff, and various plastic parts. Now you may be wondering when you see this list why I would not just buy the 40 dollar sisters of battle set, instead of buying several sets at 30 bucks for bits, now this is where EBAY comes in, search warhammer bits in ebay, and there ya go. So this is just an idea at this stage, I will be converting sisters repentia and posting a how to, 9and possibly a vid too...

So heres what I am thinking.

1.) I need bodies. The eldar guardian pack contains 2 female bodies. Now on ebay you can pick up 8 torsos for less then 4 bucks, with the other torsos I will either trade them with my other eldar buddies who are increasing their army size, or use them in my eldar army, win win.
2.) legs, I would also here just use eldar legs they look very similar. seriously they do.
3.) for arms I dont know, probably still go with the eldar guardian arms or any other arm bits you can get for cheap off of ebay.
4.) for the back pack I would suggest you sculpt 1 out of green stuff, and mold it, for mold you want to use a 1 to 1 RTV silicon mold, and a 1 to 1 plastic resin. remember to use mold release, (If you have questions about how to mold leave a comment and I will get back to you)
5.) For the helmet/ head, use any femal head, or have fun with conversions or sculpt your own helm, or make all your sisters hooded, that may look cool...
6.) weapons, ebay again, use chaos or space marine ones, It dont really matter.
7.) Robes, sisters wear robes, for the robes I would just cover up your eldar body parts with green stuff.
8.) shoulder pads, have fun with these, green stuff may be the best alternative.