Billboard company

I have 32 years in the billboard industry, 26 of which was senior management. I most recently operated 2,000 billboards for the past 10 years for another company. I have a company under LOI to purchase that company has 300 billboards. I am looking for financial backers to provide $3.2M for the cash portion of the loan for $14.2M. The lender is identified, knows the assets and is ready to go if I can find the cash portion. The seller is willing to do seller financing and stay involved for 2-3 yrs. The company revenue is $2M+ and has $1.4M+ in EBITDA each of the past 3 yrs. Seller has owned the business for decades.