Where to put my 1031 exchange money. What would you do?

[Nik L.]

I sold a highly depreciated SF Bay Area california duplex I have owned for more than 2 decades. I sold due to rent control and a bump in value but I hope I haven't made a mistake. About $48K in annual net income plus 5-6% annual appreciation. $1.7m sales price before expenses and $900K cash. Now I need to figure what to do with the money as my tax bill would be around $500K. 

Been looking at multi family syndicate TIC, deferred sales trust, OZones, investigating markets outside of California. Still in the wealth accumulation mode for the next 5 years and don't necessarily need the cash at the moment although would like to develop income streams as I semi retire in 5 years.

My familiarity is in SFR and small residential. I have been flipping in Atlanta for several years and I am a 20 year residential appraiser. But looking to diversify into something more passive and don't know much about MF, commercial, storage,??,...

My 45 day clock started yesterday. So...what would you do?