Hi soundgrrl - I am sure a
Cal owner will be along soon. I can't give a definitive answer but to me it is largely dependent on your freeboard at teh transom.
i.e. - If you have to lower the
engine on the transom too far to get the leg in the
water it makes it difficult to operate the controls. OTOH having the leg too low makes it difficult to raise the prop out of the
water when sailing.
I personally would take measurements of the
engine head, where I want the engine
head to ride under way and then figure out how long the leg needs to be.
BTW - what is the
outboard model?