I recommend getting an Audio Quest Hurricane just for your amp to start with. The improvement you get will completely shock you. The largest difference you will hear will be on your amp. Once you do this, it is likely you will want to re-think your investment strategy. Either go Hurricane for the other components or drop down a level for the components to reduce the overall expenditure. The improvement on the amp will likely convince you to the former strategy.
I spent a year auditioning high end amp power cords and was dissatisfied with all. Each either failed to improve the sound in all dimensions or tipped the tonal balance in some way. Then a minute with a Hurricane my search was instantly over.