I would consider adding stiffeners in the flatter areas of the bow. Don't know whether level or diagonal would be better. If you are adding bulkheads there then level.
Are you going to build in water tanks
or install poly tanks
? Built in you get more gallons for the space and the needed baffles can do double duty as stiffening bulkheads. The trade
off is the amount of work involved and the extra details that would need to be worked out.
If the boat is gutted, does that include the sole? On most of the Cal's there is a beam that runs under the mast
that does a very good job resolving the mast
forces. The mast lands on the beam at mid span and tabs stick up on both side to bolt to the bulkheads. Down thrust goes thru the beam rather than the hull and floors.
Have you considered sealing off different parts
of the boat with these new bulkheads to make watertight compartments?
What's the plans for the shrouds, are you converting to double lowers?
Are you considering an inner removable forestay for a staysail?
Both would need some new bulkheads for chain plates.