Combining a Seller Financing and Cash Offer?

[Terry Royce]

I have a seller who is ok with a cash offer and an owner financing structure. I am not sure which option will net me more profit, and I would like to lock up both options...

Could I write into the contract the sales price/cash price, but have an option for financing with the expressed terms?

Eg: Buyer and Seller agree to sell for a price of $100,000.

Buyer at their discretion, may elect to purchase under the terms in addendum A.

Addendum A:

Seller will finance at $90,000 for 5 years @ 5%