Once you start actually accumulating wealth, I think you generally start thinking through things like this a little better.

If you are not substantially wealthy, then your best coverage option may simply be bankruptcy versus a paying more for liability coverage / umbrella.  

The extremely wealthy use permanent life insurance.

Figure that out and you will be wealthy! 

There are plenty of wealthy people who own single family homes, but they don't just own one.

Remember, time is money and the velocity of money is what makes you wealthy.

At 19 there are people who already own properties, work in real estate and a few that are extremely wealthy...all got to where they are by DOING not by dreaming.If you insist on wasting the next 2-3 years of your life then have a blast...if you want a clear answer to your question then here it is: Read one book per week, alternate between Real Estate, General business, and investing; listen to a podcast a day about real estate and financial freedom and investing... then when you have very specific questions ask them on BP posts and connect with people that way...dont just start by trying to "get a coach" in Real EstateGood luck, hope you start DOING because that is what will set you apart

If the above doesn't get you enough funds to purchase that next property then it's worthy to consider selling and doing a 1031 exchange, unless you qualify for sec 121 tax exclusion for selling a primary.Cash flow is nice, when you are young and investing in real estate, you will become a lot more wealthy through appreciation than cashflow. 

Do you want to build up wealth over time and serve your 20 years, retire, and be quite wealthy?

Building wealth is the ability to hang onto money and for it to grow exponentially.