Last year I had a new 140% genoa made for my Oceanis 361 by North Sails. It is Nordac, crosscut with a Sunbrella UV cover sewn on the edges. They did a beautiful job. The original (2002) Neil Pryde 140 % was streched out in the belly and pulled the boat sideways as much as it did forward. I noticed a huge improvement with the new sail. I would recommend the 140 because that is the boat's "designed" sail. I am also on an Inland lake and it is rare that the 140 is too much sail. I can carry it up to about 16 knots of wind before I start to get overpowered. My original Neil Pryde had foam strips sewn parallel to the luff to improve the shape when "roller reefing." Of course these same strips created turbulence when the sail was fully deployed. I did not get them on the replacement sail and have not regretted it. I also ordered a 100 percent jib (Norlam tri-radial) that I use when it is really howling. Around here, that is usually in the early Spring and late Fall. Another solution would be to use an ATN gale sail over the furled 140 when the wind picks up. I have one of these, too, and it works surprisingly well. Good luck.
Agaliha