Wedding Barn Opportunity

[Mitchell Van Overloop]

My wife and I own a nice cash flowing duplex and are currently in a live in flip. We are looking at buying a wedding barn venue that has had a steady flow of around 25 weddings the last 5 years. Currently the barn pulls in $4,000 per wedding. The property comes with 5 acres and a 3 bedroom, 1.5 bathroom house and has an estimated value at $400,000 from 4 different realtors opinions. The seller wants another $150,000 for the business which I see as a pretty reasonable price considering the income the property would turn over every year. A big problem with this however is that the mortgage company will only lend on the $400,000 property value which still leaves $150,000 on the table. 

My question is whether or not we should sell our duplex and house in order to make the deal work. The duplex has over $85,000 in equity and the house has around $90,000 in equity which would cover our down payment as well as the cash needed for the business purchase. I am wondering though if we can keep the duplex somehow by getting private money and what that would look like. The duplex rents for $1,000 and $1075 and the mortgage payment is $1050 per month. What do you all think would be the better route to go?