Is this a safe technique? (It got way worse this time)

So earlier I asked if it was ok to have a player sitting in the seat of a vehicle while having the vehicle inside the player, just so the player could interact with the vehicle without needing a tool.

What I have now is way more complex and even more inceptiony, I have the original player on a seat while the model the seat is in is inside the player, but I also have another seat in the model in the player that puts a model within the model inside the player into another player, so that other player can control only the gun of the plane.

So to explain a bit better, A player is sitting in a seat and the model that seat is a part of is in the player, and another player is sitting on a seat inside the model inside the other player while having a model from the model inside the player put inside the second player.

Is this safe or will this create a black hole or something?

I'm not exactly sure of the context of this, or of what exactly you mean with all this inceptiony stuff xD. However, just a suggestion, would it not be easier to clone GUIs into the player which in turn fire events which control the functionality of the plane? This means that you can then keep the plane model in workspace and just have it listening for events when the pilot or gunner presses certain keys or UI buttons.