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I assume I am going to pay taxes on the payments and interest earned annually rather than as a lump sum payment.
You should consult with a tax professional in your area and local legal counsel.
See https://taxexperts.naea.org/listing/service/individual-tax-preparation
See also https://www.avvo.com/real-estate-lawyer.html
The two transactions are installment sales and reporting can become quite complex. For properties you have been renting to tenants, you will have to prepare and file Forms 6252 and 4797 at a minimum.
See https://www.irs.gov/taxtopics/tc705
TurboTax can handle this scenario, but you are most likely going to need help with reporting it properly.
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