I’ve settled on using LÖVE for my first Ludum Dare.  Also, I’ll be using Pinta instead of GIMP for my graphics.  Since I don’t want to break the rules, I probably will be using a state manager and a simple entity manager of my own creation.  The plan is to have something playable by the end of the first day and spend the second day making it awesome.  I don’t know how well my plan will work.