there, I'm going into separation, my wife wants an unequal…

It would be important to verify the matrimonial regime in Cuba applicable to your situation.
Concerning the division of the family patrimony, as you know both parties should split in half all assets of the family patrimony acquired during the marriage.
If your spouse has a revenue which is far superior to yours, you could ask and use this to leverage her demand unequal division of the family patrimony.
If you spent large amount of family income in gambling an unequal division could be ordered in theory, but only a live lawyer studying case law will be able to determine what likely outcome would be yours.
As you know the house, furnitures, cars, RRSPS and RRQ are part of the family patrimony it needs to be divided a lawyer can help you do that if you invested in the house that could be an argument against an unequal partition, which is a rare measure cases where major wrondoings from a spouse are proved.
I hope my answer sends you in the right direction.
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Best regards ,
Jeremie ***** *****