You may have to go through doorways in the next location so if you make them 800mm deep x 2000mm high they will go through a standard door. 1200mm works better than 1000 as you get 2 out of a 2400 sheet with no waste. To do what you want, you'd have 12 banks of 1200 wide x 2000 high x 800 deep divided vertically into 4 cages of about 500mm high, giving a total of 48 cages. I have pretty well the same for pythons , only mine are divided vertically into 6 of 300 high. I join cages by way of 100mm portholes so animals can have either a 1200 wide cage; a 2400 cage or a 3600 cage 4 bolts with wingnuts hold the ajoining cages together. Those sizes also work for transport if you do have to move them. No computer cutting necessary , just make one and when your happy massproduce the rest with mister ply.