hum...very interesting...
But it's a little weak for me.
Weak for what? With the 6 305-mm guns (and possibly a 320-mm 320 mm/44 Model 1934), it will be stronger than any of the heavy cruiser with a 203-millimeter guns.
I read the original proposal (in Russian), the plan was to use her to disrupt French convoys sailing between the mainland and her colonies in North Africa. Unless the convoy is covered by capital ships I can easily see this design doing a fair bit of damage.