This will give you a good starting point.3.

I was looking into punta cana but im starting to think that the north coast would be better due to punta cana being all about resorts

All the more reason to start your own portal.  

I'd like to start building the first house and go from there.

.- She starts building equity on her unit rather than renting. 

That's exactly how I got started.

Nevertheless, I would inquire and ensure that the home is being sold with the typical new construction Statutory Warranties, and I would want to ensure that the warranty start date would be the date you take possession.

I was more wondering how people are able to finance 100% of the deal so I could potentially start doing more at once / be able to tackle larger projects.

One thing I've noticed is that of all the things needed to start out, money is definitely high on the list. 

It will be self managed, I will be near the unit (less than 5 mins away) to clean and take care of any issues.My numbers:Approx Value of Home $240-280kCurrent monthly cost / $860 mo (mortg,ins,tax)Utilities / $250. mo (elec,gas,water,trash,internet)Cost to run as AirbnbApprox monthly cost with STR insurance ($250/mo?)