How should I invest in real estate?

[Josiah Sia]

Howdy BP community! Loving everyone here and all the insight into real estate I've been getting. I'm a complete noobie and I think I've been asking the wrong question so far because I keep going back to the drawing board. 

My wife and I are diving head first into this game. Our goal is be financially free with $15-20k in monthly passive income in 10 years. We've recently took our budget and loans to the chopping block and are able to save $49k annually of extra income to use towards this journey. We have a starting savings of $40k. 

Instead of asking "will X or Y plan work," I'd like to ask all you more experience investors; How would you achieve our goal with our financial situation as it is? SFH or MFH buy and hold? BRRRR? Buy and pay off SFH/MFHs to maximize cash flow? How would you start? How would you build/ramp up or "work the stack?"

Please advise. Any input is greatly appreciated.