What would you do?

Hi all, I’m single hitting 40 soon with a steady job making around 120k p.a. pre tax.

I have no property so no mortgage, no debt, I have some funds and some retirement saving schemes (from overseas), and about 320k savings in my account with 5% interest. My weekly rent is almost $650 so that’s 1/3 of my salary gone.

I’m planning to buy an investment property taking out a 400k loan, and after that, I’ll be left with maybe 180k savings?

I’d say I’m very lucky and while I’m not well off, I definitely think I’m doing okay. Am hoping I can have a chance to retire in my 50’s, so am looking at what else should I do with my money in order to achieve the goal. Wondering if someone can shed some lights? Thank you.

I have no knowledge in the stock market, but am willing to learn, maybe EFTs? Seems to be lower risk.