Okay, no.
First of all, please be sure that you have some experience, or at least a good understanding of the topic before answering.
Next, to do that, I would have to add more rpc functions, twice the amount because I would need one set for each player, or I would need to re-work everything to make it so that it sends which player the client is talking about (player 1 or player 2.)
I was just wondering if there is an easier way to do it other that completely reworking my game.
I DO know how to do online multiplayer, and I DO know how to do split-screen, or I would not have asked this question.