Yeah you could totally do something like that in RPG Maker. I've actually seen it done but it's very hard. I think something like that would be hard to do even in other game engines. You need to have a good idea of how programming works in general, since rpg maker follows programming logic, even if it's simplified.
I think your first project should be something simple to test if you understand the mechanics of the engine, and if you're good at it then go for the more complicated stuff. But you probably already knew that.