the 122 is good but you have to get one or two extra fins to sail the sails u want. The 133 has a very good stockfin with it and will plane a bit earlier in lower winds. The 133 has a bit more speed in the end but it will get going a bit more slowly i think.
for your weight 122 is a bit more ideal as you'll have less acces volume.
hope it helps
Haiko, AKA crazychemical