I really don't think it's necessary to make this script into a module as its pretty specific

There's nothing wrong with writing a very specific module. I do it all the time. It makes for a nice way of pulling things apart into manageable chunks. There is a good tutorial -- Simple Module Tutorial -- here at the Monastery. I suggest you take a look if you're not familiar with creating modules, and don't be afraid. It's a simple and rewarding process!