TT Straps are not expensive and the cheapest way to start off an old ship with questionable history. Once inside the hub a few more items may warrant replacement, but the inspection is worth not having to worry about slinging a blade........
Blades are another story. most bigger than 205s etc have BIM indicators which are the first sign of a problem other than recorded hours. There have been some nastys when folks didnt pay attention to indications.........
Be careful out there. Its much nicer to be able to hit the pub in the evening rather than someone seeing you in the news.