My input would be to keep it simple. If you are able to find a retail outlet for b100 I would just go with that and see how you like it. I've been running that in my car and it works great. Just be prepared to change your fuel filter pretty soon since b100 (or vegetable oil for that matter) acts as a solvent to the crud that has built up in your tank and fuel system over the years. Your filter will catch that stuf no problem but if you notice that the car begins to act like it's not getting all the fuel it wants, that's a signal that you've freed up enough sludge that is now in your filter that it's time to replace it. You notice this performance hit when you hit the accelerator pretty hard - it'll just be a bit off compared to what you're used to.
If you want to run wvo it's probably best to have the car professionally converted. I could recommend a guy but he's here on the west coast so it wouldn't do you any good. In case others are interested it's
www.lovecraftbiofuels.com, and the guy's name is Brian.
There are many different systems out there to convert a car to veg oil. Your main choice is single tank or dual tank. You may want to consider dual tank if you actually get a "winter" where you live.
You will see about a 3-5% drop in power when you go to veg oil compared to petrol diesel if you change nothing else. Most people just tune the turbo up a bit to compensate (it's a very small hit anyway...).
Myself I'm running b100 until I can arrange the conversion. Probably in a week or so.
HTH... Charlie