[blt2ski]

My 85 Tony Castro designed Arcadia is literally about 2' shorter. I've had no real issues in winds to 40-45 knots here in Puget Sound. Issue I have heard about great lakes, is due to shallowness of the lakes, the waves are shorter and steeper. probably like here with the wind against the tide.
The SA/Disp as noted by shock at 17-1 is similar for my arcadia with 100% triangles. But will swag with a 155 genoa, full roached main you will be as i am around 24 or 25-1. So If the BIG genoa is lighter in weight, you can do okay in light winds.
With that said, their are some issues with boats of that age. Things may be fixed, maybe not. Like the foam back hull liner. Does it have newer standing rigging, sails, running rigging etc. if not, you could have a bunch of money going out to fix or replace this stuff. It is a 35 year old boat.
Otherwise, it is probably more solid built than newer Jeanneaus in many ways. Altho not asopen down below, due to current model hull shapes, slightly wider etc.
Jeanneau-owners.com has good info on the boat, as does its forum, as is the FB page.

marty

 

[blt2ski]

The Cal9.2 was a pre fastnet Jim Holland? IOR half ton design. unlike the Attalia is a post fastnet IOR design. So a LOT of the pinched stern, deathrole issues have been removed from the version 3 IOR designs as the attalia and my small half ton Arcadia are. that is not to say this will not deathroll, yes its happened, but it is harder to do. The base hull design is different. As noted, not sure that ANY of these boats are truly for a long term cruise boat for a family of 6. But it is doable.

marty