Refi w seller holding the note

[Natasha Billinghurst]

Seller will hold the note . this is my first venture w seller financing . I am hoping to refi within a year but are there specific lingo that should be in the contract so that when i do approach the nanks i dint run into issues as seller will be holding the note ..... any advice ? 
is it difficult to re fi w this type of buyer / seller structure w the banks ?