Ramblings maybe but they made alot of sense.
I guess the question is, will I, at my weight, be disadvantaged in light winds by having an 11.6 as my largest sail. To have a 12.5 and an 11.6 seems to me to be silly - but I am happy to be told tht I am wrong. Almost 1 metre difference could mean the difference between planing or not in marginal conditions.
Once the largest sail size is established then the rest should follow.