To get a loan or not get a loan. That is the question?

[Juan David Maldonado]

Hello, Y'all! 

My father owns 5 acres of undeveloped county land in my hometown but never did anything with it. Down the road from it is our high school, an elementary school, and the main drag. I want to build a duplex on it. Should get a private money investor on board or just pay for it myself as I go? Both ideas have their negatives and positives. 

Thank you!

JD