I'm a student too and probably have only about 4 hours free in a day. With that, I need to make the game engine, the game logic, the game loaders and everything else from scratch since I'm planning on making it with pure coding (Python and PyGame). Currently, I'm testing some possible game engine structures at the moment and choosing from them. I'll then fine tune them when the jam starts. That's not against the rules is it? ^_^