sounds like you have already made up your mind! I have the 2009 133 and weigh 78kilos. I find a 7.8 a perfect match with a 8.5 as an option if the wind is a bit lighter. I use a 48cm fin with the 7.8 and a 52cm with the 8.5.
The 133 appears to me to work best by concentrating on technique as opposed to hanging onto a big sail. Given the difference in our weights I would recommend going for a 8.2 to 8.5 as your main sail. ps I have no experience of the sails you mention. I use Tush Lightnings which have the benefit of more bottom end grunt than most full race sails