Both passed at the same time? Somehow I get a sense this is either a scam or attention seeking post.

Okay, let's say I your story is true.

Shouldn't you be seeking advice of someone trusted like your relatives instead?

My advice is that you should sell off those offshore properties since at your age you wouldnt be able to manage and monitor them effectively.

With no immediate family and next-of-kin, are you planning to stay by yourself or move in with a relative? Didn't any of them offer since both of your parents passed away and you are left alone? Are you going to the uni? Are you still in the Army now?

I would suggest that you keep only the SG properties and get a trusted relative advice or even help on managing it. (e.g. renting out etc)