@intactaudio agree strongly with set up added to the list, and IMO that requires microscopy analysis to deal with errors such as zenith, which can be as much as +/- 5%.
Wally Tools is the only source that I am aware of that provides and end-to-end solution.
For the list...
- TT (which for me includes arm because I've only bought ClearAudio combos.
- Cart
- Cart set up
- Phono stage
- Wires
Why?
The TT is the foundation. You can always grow into a commensurate Cart/PS combo.
Cart before PS because the cart influences the what PS you need or want to some extent.