Question for owner financing

[Gregg Fratto]

Ok BP people, I have a buyer that wants to put 20% down on a 2 family that i am selling.

PP $249,900

20% = $49,800

Mortgage amount would be $199,900

Mortgage amount that I owe $125,000

Question-

what interest rate should I charge ?

Who pays realtor fee ?

How long should I hold the note for ?

If i charge 5% interest the PITI will be about what im paying right now for the mortgage. Should I charge more percentage ?

Thanks