Big Inheritance - Any Ideas????

I recently inherited 1.5 million suddenly and feel totally overwhelmed. Its been hard losing someone so close and now don't have any close family members left.

I am 39 years old with no kids or a partner, with 110k left on my mortgage on my 3 bedroom house. No other debts and 200k in Super. I take home 6.6k per month after tax and current mortgage is 2k per month. I am happy with my current job and company and don't want to leave, not stressed or unhappy.

My house is Ok for now, but not ideal long-term as it is a little rundown and will require renovations, painting and maybe re-stumping.

I am thinking about selling my current home and upgrading to something nicer, a forever home.

I want to pay off the mortgage straight away leaving 1.3 million leftover.

Do I buy another forever home and rent out my current home to be mortgage free? Or do I stay in my current home and invest the 1.3 million into EFTs and live off the interest? Or do I sell my current home and invest the balance into EFTs and buy my forever home?

I am overwhelmed and open to any ideas. I don't want to stuff this up and want to make the most of it since it is a life changing amount of money.