Additionaly to the already suggested Ini entry for Everything search there should be an entry to launch Everything when TC starts, so it has time to update the index.
This would mainly benefit portable installations.
So e.g.:
EverythingTCSearch = "c:\pathto\Everthing.exe -someParameter"
EverythingStartWithTC = "c:\pathto\Everthing.exe -someOtherParameter"
I think Windows provides better ways to handle this task. A scheduled tasks have various execution conditions. So you can start it twice a week at night or only when the PC is idle and so on.
There is of course nothing to say against TC creating such a task - but it would be a bonus.