Seller Financing: How can I make this deal happen?

[Dante Pirouz]

I have the chance to buy 3 multi unit properties owned by a seller who wants to retire. The seller is willing to do seller financing with the following terms:

35% Down, 7% Interest, 7 Year Balloon

The asking price and rent rolls are as follows:

Property 1 = $63,999

Unit 1: $550

Unit 2: $550

Total Monthly Income: $1,100

Property 2 = $349,999

Unit 1: $400 Unit 7: $450

Unit 2: $450 Unit 8: $450

Unit 3: $430 Unit 9: $450

Unit 4: Empty ($450) Unit 10: $450

Unit 5: $410 Unit 11: $350

Unit 6: $450 Unit 12: $450

Total Monthly Income $5,190 + $150 (Coin Laundry) = $5,340

Property 3 = $239,900

Unit 1: $550

Unit 2: $550

Unit 3: $550

Unit 4: $550

Unit 5: $550

Unit 6: $450

Total Monthly Income: $3,200

I will have about $60K available pending an SFR that I am selling but that does not give me the total downpayment the seller would like which is about $225K. How could I structure an offer that takes advantage of the seller financing offered given what I have available in cash? Would it be reasonable to offer 10% down to the seller? Could I borrow part of the 35% down payment that I don't have from a private or commercial lender?

Any help on this would be greatly appreciated!!