I like your ideas on where to find these holocrons and generally I'd really like to see them restored.
However I think that they should not grant Force Crush and Force Enlightenment but new powers as those are endgame powers in my eyes that shouldn't be available early in the game. I didn't like getting them from the Jedi Temple mod either.
The other issue I see is that your idea doesn't rely on the Disciple at all. There doesn't seem to be a story/quest related to him trying to find the holocrons. Instead it's just the player randomly finding them and if the DIsciple happens to be around he gets a force power too. I think there should be more to it somehow.