Buying land contracts in place, need help w/contracts & due dili

[Jennifer Handlin]

Purchasing 2 LC in place. Numbers are good but want to understand what I need in place before I sign the sales agreement of what I need from the sellers along with do I rewrite the land contracts?  Sellers want to close in front of a notary with no closing costs...there giving me a quick claim deed only. I'm pulling preliminary title work. I'm not a new investor but this is my first note purchase. Thanks!