I disagree slightly on interpreting price-cut timing as evidence of motivation. A reduction can be tactical rather than a sign the seller will accept another large move, while an unchanged stale listing may belong to someone quietly flexible. Before offering, ask what terms matter besides price...
Stress it without assuming growth. Try a longer vacancy than planned, one turnover with maintenance, higher insurance or property tax, and no rent increase. Then ask whether you would still comfortably hold it without resenting the monthly cost. If the answer changes quickly, the deal has little...