Your half of jointly shared assets becomes vested in the Official Assignee on bankruptcy.
To my understanding the Official Assignee could apply to the courts to get an order to sell the RIPS properties if he wanted to do so. If that happens, I believe that your husband will become responsible for the entire negative equity shortfall.
Given that the RIPS properties are under water and fully secured to a particular financial institution and not currently in arrears, the Official Assignee may agree to your husband taking full ownership of the properties and the associated debts,especially if your husband and the lender(s) are agreeable to that. Clearly properties in negative equity hold no value to an Official Assignee
I don't believe that there will be any impact on the family home in this case. Your husband will become responsible for the associated loan in its entirety.
It's unclear how much there is to be gained by you going bankrupt if a large part of the the debts just transfer to your husband. Having said that ,you haven't disclosed how much other debt is involved here in your sole name.