Are thinking of going with the 121 & 101, and the 127 as a third board, or do you mean either a 121 or 127 plus a 101?
Three boards makes the choice easier, but you can still get a great usable range from two boards if you choose the correct gap between boards.
127 and a 101 would give you a usefull range. The 127/9m and two good fins will see you from 10k to low 20k's easy. Then jump on to the 101/7.7/6.7 in solid 20k plus winds.
I would only say the 121 would be good if you were going for the 90, but as your getting the 101 its got to be a no.
Your a pretty big guy, but If your concerned about the 127 being to big, the 117 would be a good choice as well as it will be good with a 9m, and with a 2nd smaller fin the 7.7 will just about be very good as as well.
I guess at Como lake, the 6.7m is not used to much, more the 7.7 and 9m. This could mean that the new 117 would be king of the lake
Just my 2 cents