Instead of me giving a down payment, seller will finance the 300K in 5 years and we want to structure the whole 300K as a interest-only loan .

Depending on how to structure, you take title on the house at the closing or you take the title when you paid in full at the end of installment sales.  

It is much more challenging to create supply in the Northeast further increasing demand.

How many books do you think you would need to read before you become a structural engineer?  

It's also common to encounter retail branch employees who are  not familiar with  the entities and various ownership structures real estate investors utilize since they are normally opening personal bank accounts.

This particular JV was structured to encourage a quick turnaround by increasing the rate of return if not completed and on the market by month 4.

The key is to have a team in place that performs for you and that you trust...no matter how you structure it.

We will be structuring our deals as  506c meaning only accredited investors can partner with us.

I stay away from secondhand and thrift places, and make friends with contractors that get huge discounts at supply stores (sherwin williams, plumbing wholesale) Sometimes buying in bulk and selling what you don't need is a great way to meet people doing the same thing as you. 

I will structure my deals to have a clause where investors want to hold for a longer period.