I, personally, have mixed views on this.  

Me personally, I would save up a little bit more to at least 30K.

There are several popular programs out there, but personally I like Baselane because it's specifically for real estate investors so all your transactions will fit into the Schedule E you're going to need at tax time.

One person's unique could be my ordinary, and vice versa. 

CGL coverage will cover property damage, personal injury and  bodily injury but not many other issues that often arise, particularly during construction. 

A Debt Service Coverage Ratio (DSCR) loan for investment properties is often considered better than a traditional mortgage for several reasons such as: it focuses on the property's income rather than your personal income.

Personally, I would look at the equity and would let that be my deciding factor.

House hacking will also give you some personal "property management" experience.

Personally, I am fine keeping my deal analyzer separate from the management of the properties I already own, but I suppose there is some value to one-stop-shopping.* Platforms that try to be all things to all people: This category is mostly Stessa and Baselane, both of which offer landlord accounting, self-management tools, as well as high interest cash management accounts. 

@Jake Mercer would be a good person to reach out to and so would be @Fakaradin Floyd.