After realizing that I was going to end up with over 100MB of assets to do what I wanted to do, I decided to take a different approach entirely... Which led me to start writing a software 3d rendering engine for my project. I've pushed it up to my github repository if you are curious... I've still got a few bugs at the moment that I need to go over my maths again and see where the problem originates from, so that I can squash them.
If I can get to the point where my initial gameplay environment is running before end of day, I will be happy. If not, well... then reaching finished game status by end of the jam will be really really difficult if not impossible altogether.