>>277664441
>Where can I find info on how fast my PC needs to be for what headset
SteamVR performance test is a good place to start if you want to know how good your current system is. Logical increments is a good starting point for a new computer.
https://www.logicalincrements.com/articles/vrguide
If you have specific questions you can ask here or just use Google.
>what FBT options are open for me
Pucks, PSVR, or Kinect. Pucks need a hybrid setup with lighthouses if you're not using a headset that already has them.