I started to make my own rack after only having two ball pythons. Home Depot or Lowes will cut sheets for you, my HD does cuts for free, Lowes doesn't. Call them up before hand. It will save you loads of money and your snakes will be happier. I have acquired many ball pythons from other in tanks. I put them in a tub and even the ones that wouldn't eat will grab a frozen rodent within a week.

I'd go for it, look at the DIY forum and you will find may good plans!