If he wanted his business practices to be different, than they would be. 

Im very new in the real estate business but i think youre right $500-800 dollars is better than $1500

If you are using the HELOC proceeds to acquire land for a property that will be business use in some manner (a rental), then that interest expense from the HELOC would be deductible against that business project. 

Run your business like a business.

I'm not a big fan of mixing family and business because it can destroy relationships.My favorite recommendation is the one nobody wants to hear: work like a dog, save up, and buy things you can afford to pay for.

I wholeheartedly believe in the business model. 

However its often easier to entrust those who do this as a business to buy the assets and provide you with a solid return. 

Pretty cool all in one, they've definitely won our business. 

When you become an agent or loan officer, it's like starting your own business.