Seller Financing options on a 4.5 million dollar multifamily deal

[Stephen Jones]

BP,

I have a 4.5 million dollar multifamily deal on the table in which I'm trying to do everything I can not to lose. I have a great relationship with my lender and on this particular deal I would only need to come with 15% down (675K). I only have about 300K to invest in this deal, so therefore I am short the 375. What are my options? I know the sellers are trying to avoid paying capital gains. Would a seller finance deal be beneficial to them? If so, can anyone give me any options? I've never done a seller finance deal so I'm a little in the dark on how to present one. 

I've also considered partnering, but I literally have no one close to me that has any capital. I understand this is fairly brief so if there are any questions, feel free to let me know. Thank you all for your help!