And considering everything else he does for me, it is worth it for me to pay him the extra bonus.

Congratulations. not sure on the floors we have been using real bamboo  and in our other high end home it will be heart of pine.. not familiar with Houzzcabinets were ordered  counter tops were custom concrete though.. house is 4 stories and what makes it special is it will be the last one built that can be that tall in that area they changed the code right after we were permitted Charleston is challenging you need the height to get the sq ft in the house that house is still only 1700 sq ft.. you have to build up out of flood zone in that area so you cant go under and first level has to be parking so now you can only do two floors above garage.. and because the lots were created back when the US was created basically they are all tiny 20 to 30 feet wide 50 to 80 feet deep.. so it going to be interesting going forward.. basically going to be pretty tough to have anything over about 1500 sq ft.

Using the BP calculator the property will cash flow, if permits are approved for the backyard cottage the deal would be a homerun.Typically how long do the loans last when doing a Owner finance?

There are a lot of ways to construct deals but maybe, for now, you should save up the extra cash and attend meetups for networking purposes.

And if that $2080 is being used as down payments and leveraged to buy real estate, that means I have just gained an extra 10,400 - 20800 worth of real estate ..I see this as a simple example of an actionable step to help people towards financial freedom.I am currently applying this in my own path to financial freedom.Would love to hear other peoples perspective and opinions on thisWhat are your thoughts and methods to achieve financial freedom?

If I were you, I would consider spending a few extra $$ and look in Rotterdam or Scotia.

Is the extra income worth it for those 4-6 months?

You don't want to start the loan until you have permits in hand and are ready to build since they're usually 1-yr loans. 

As far as ther downstairs goes, since the downstairs kitchen is decent size, I was looking at walling off the dining room and making a 3rd bedroom.  3 bedroom apartments appear to rent for 750 - 1000 so I am thinking I would sacrifice the dining room for the added value of the extra bedroom. 

Thats money Not spent but its not extra income either so most people wont count that but yes it is savings.