I would abuse precognition to its limits, becoming the best scientist since I could see into the ever-changing future of any of my experiments, constantly fixing flaws, the first thing I would work on would be making a super-soldier serum to enhance my intelligence so I could use it better and smarter, then work to bring science to and beyond its limit, no need to worry about money since I could see the future of any stock and company. I could get all the benefits of a time loop without needing a time loop.