The question is mostly a personal financial planning question and it depends on your preference and what balance of risk and access you'd like and would be comfortable with.

Your best bet is to find and contact all of the top local wholesalers and go to work for one of them and see what they do right and wrong and see if it's even a business you like.

I was wondering how people managed to scale their businesses faster.

Although most of my stays are <7 days, I've had a few longer stays (business travelers and a family that was going through a full home remodel).

Both from how you want to structure your rental property business and how to handle things from a tax perspective. 

I think it depends a lot on area and price point with $7k monthly rents I rarely spent more then $3-4k a year on cap/ex/maint.

A good manager will handle everything from marketing to maintenance and tenant screening, saving you time and stress.Vendors and LandscapingBuilding a team of dependable vendors—like landscaping companies, contractors, and insurance agents—is critical.

JakeIt depends on the lender and type of loan.

I currently live in Phoenix, AZ but I'm looking to purchase land and put two prefab homes on it with my business partner.

Maybe concrete single-family 1-4 units depending on the price point and cash flow.Also there is no real MLS in Puerto Rico you need to find an agent for each area you want to look at.