I’m glad to read that! I hope it helps. I would also recommend joining a credit union if you’re eligible and not already a member. They will typically have much better rates and lower fees on various services. Also, doing this math can be depressing - I remember having weeks where I had like $30 to cover gas and food. If you find yourself in that situation, dried beans and a second-hand pressure cooker are a much healthier alternative to the usual ramen packets.
You should be able to use COM interoperability , specifically the OpenAsDocument() and Save() methods. You can also use COM interoperability to read from Excel, but using ImprtFrom-CSV would be much easier. Then you just iterate over the file names, and for each one open the template as a document, then save it as the filename.