Help structuring this seller finance deal

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I am talking with a seller of a small multi family that is OK with seller financing, however he does not want to deal with keeping up with interest/principal payments. He wants more simplicity. He wants 5% on his money and is willing to finance up to 96 months with a balloon at the end. He wants a minimum payment of 1000/mo. The purchase price is $130,000., I am stuck trying to figure out how to accomplish this. Any help?