Investing at 27 with a high ish income - how to go about it?

I am 27, would like to say I am fairly successful for my age but I am unsure of how to best make my money work for me.

​

i have two streams of income, my day job at around 15-18k monthly and a side business that makes me about 12-15k monthly.

​

Currently I rent a room for $1.75k and and looking to rent a full apartment with my fiancee at about 3k. Property prices are kinda high so I'm not sure if I should purchase a flat as soon as possible because interest rates are high and mortage will cost more than rent (plus the initial downpayment of 200k can be used to invest). I currently split my money into half cash and half into VOO S&P500 ETF.

​

Will I be better off buying a house ASAP? Or make use of the Higher income to invest More earlier in my life and let compound interest do it's job? Which makes more sense?