Under which act should I marry Hindu Marriage Act vs Special Marriage Act

Hi I am a Australian Citizen (not Indian citizen but I do have OCI) who intends to marry an Indian National. I am told if I do a ceremony we will be governed under Hindu Marriage Act and the other option is to marry under Special Marriage Act. I would like to understand the implication of marrying under one act over the other incase of a divorce in regards to: (1) Alimony or Maintenance: Is it permanent in both cases ? Does the husband have a right to discontinue incase the wife remarries under both acts? (2) What happens to the property in India both inherited and self acquired? Does the wife have an automatic claim to the inherited property / self acquired property? These questions are with the assumption that our marriage breaks down and we pursue divorce within the Indian Jurisdiction. I understand if were to pursue under Australian Jurisdiction and a decree is granted it can still be challenged within India. Although I was born to Hindu parents (so was the bride) is it admissible in the court that I do not practice it and hence why Hindu personal laws cannot be applied? (This is a supplementary and general question not related to the above questions.)