I think it is time someone was straight up with you....
Having owned, or still owning every calibre powder burner one thing is clear....you are already a gun addict.
You have a PCP already that will do what you want ( it only takes 5ft/lb of retained energy to head shoot a Jack rabbit or Hare as we call them in the UK) and around 8ft/lb to kill them with a chest shot ( I know this as prior to getting my firearms cert I was limited to sub 12ft/lbs)
As you already know it is accuracy that kills and not power.
It appears what is happening here is you are now extending your addiction into airguns which will only end up with you spending thousands....( would love to hear back from you in a couple of years to see how much youve spent on them

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Bottom line is you will struggle to find your perfect gun as you will always find a reason to change so you can keep feeding your addiction ( do you need every calibre of powder burner.....??! No, but you wanted them all

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You have money, buy what ever you like the look of as in reality there isnt much between them, and dont listen to the nonsense about a $500 gun being less reliable than a $2000 gun ( just look through the technical posts on this forum and see how many manufactures are mentioned, they are not all sub $500 guns by a long shot)