Buying first rental property

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Hi all,

So im currently 19 and my goal is to buy my first rental property by the end of 2020. I was wondering if you think it would be best if I use the house hacking method so I only need to put 3-5% down but still live at home leaving one unit vacant for one year then renting it out. Since financial I wouldn't be able to support myself since I'm a full-time college student. Or should I wait and save more so I can put down 20% and rent out all the units.