Hard money vs Business Line of credit

[Alejandro Flores]

If you would buy a property to flip and fix which would you use? Hard money or Business Line of Credit?

I ask this question since I and my father are looking to find a property to fix and flip. My father owns a Nail Supply store and has not opened a Business line of credit. He has 700+ credit score on the business. 

I use marketing to find my deals and I have wholesaled a deal before but I want to fix and flip. Would it be cheaper and faster to use a business line of credit then hard-money? Hard-money our rate would be 12-15%, we have 20-30k to invest.